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This files describes API changes in core libraries and APIs,
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information provided here is intended especially for developers.
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=== 4.4.2 ===
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* The `\core\dataformat::get_format_instance` method is now public, and can be used to retrieve a writer instance for
7
  a given dataformat
8
* Added the ability for unit tests to autoload classes in the `\[component]\tests\` namespace from the `[path/to/component]/tests/classes` directory.
9
* Added the `advanced_testcase::load_fixture()` helper to load fixtures from a components `tests/fixtures/` folder.
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=== 4.4.1 ===
12
 
13
* Use server timezone when constructing `\DateTimeImmutable` for the system `\core\clock` implementation.
14
 
15
=== 4.4 ===
16
 
17
* New modinfo methods related to delegated sections (sections controlled by a component):
18
    - course_modinfo::get_listed_section_info_all to get only the listed course sections.
19
    - course_modinfo::has_delegated_sections to know if a course has delegated sections.
20
    - section_info::is_delegated to check if the section is delegated.
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    - section_info::get_component_instance to get the component section delegate integration instance.
22
* Added modalform config object `moduleName` param that can be used to define alternative modal type for the modalform. By default 'core/modal_save_cancel' is used.
23
* Add a new parameter to the debounce (core/utils) function to allow for cancellation.
24
* Add a new method core_user::get_initials to get the initials of a user in a way compatible with internationalisation.
25
* The `core/sortable_list` JS module adds a `sortable-list-is-dropped` class onto the dropped element after successful
26
  drag/drop, which can be used to add transition effects in calling code
27
* course_modinfo now has a purge_course_modules_cache() method, which takes a list of cmids and purges
28
  them all in a single cache set.
29
* The `core_plugin_manager::plugintype_name[_plural]` methods now require language strings for subplugin types always
30
  be defined in plugins (via `subplugintype_<type>` and `subplugintype_<type>_plural` language strings)
31
* Behat generators can now implement the function finish_generate_ to detect when the whole list of elements have been generated.
32
* New return value 'icon' has been added to the 'external_files' webservice structure. This return value represents the
33
  relative path to the relevant file type icon based on the file's mime type.
34
* Removed the sesskey passed from manageauths and manageenrols to their respective test_settings.php pages.
35
* The following previously deprecated methods have been removed and can no longer be used:
36
  - `download_as_dataformat`
37
* In enrollib.php, the method enrol_get_course_users() got an optional 5th parameter $usergroups that
38
  defaults to an empty array. Here, user group ids can be provided, to select enrolled users in a course
39
  that are also members of these groups.
40
* The options for `format_string()`, and `format_text()` are now checked for incorrectly passed context objects.
41
  Please note that this was never an accepted value but previously failed silently.
42
* The current page language is available in new `core/config` language property for Javascript modules
43
* The `html_writer::select_time` method has a `$timezone` parameter to use when formatting the time parameter
44
* The following functions have been added to adhoc_task class:
45
    - retry_until_success(): Used to indicate if the task should be re-run if it fails
46
      By default, tasks will be retried until they succeed, other tasks can override this method to change this behaviour.
47
    - set_attempts_available(): Used to set the number of attempts available for the task
48
    - get_attempts_available(): Used to get the number of attempts available for the task.
49
* Support for blocking tasks has been removed. See MDL-67667 for further information.
50
  Please note that this feature never worked correctly and can cause serious performance issues.
51
  It is also not possible to deprecate this feature in a notifiable way.
52
* There is a new DML method $DB->get_fieldset. For some reason, this did not exist even though get_fieldset_select etc. did.
53
* The following callbacks have been migrated to hooks:
54
  - before_standard_html_head() -> core\hook\output\before_standard_head_html_generation
55
  - bulk_user_actions() -> core_user\hook\extend_bulk_user_actions
56
  - before_http_headers() -> core\hook\output\before_http_headers
57
  - before_standard_top_of_body_html() -> core\hook\output\before_standard_top_of_body_html_generation
58
  - standard_after_main_region_html() -> core\hook\output\after_standard_main_region_html_generation
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  - before_footer() -> core\hook\output\before_footer_html_generation
60
  - standard_footer_html() -> core\hook\output\before_standard_footer_html_generation
61
  - add_htmlattributes() -> core\hook\output\before_html_attributes
62
* Deprecated PARAM_ types with the exception of PARAM_CLEAN now emit a deprecation exception. These were all deprecated in Moodle 2.0.
63
* A new \core\attribute\deprecated attribute can be used to more clearly describe deprecated methods.
64
* A new \core\deprecation class can be used to inspect for deprecated attributes:
65
  - `\core\deprecation::is_deprecated(example::class);`
66
  - `\core\deprecation::emit_deprecation_if_present([self::class, 'some_method']);`
67
* Added missing deprecation for PARAM_CLEANFILE which was deprecated in Moodle 2.0.
68
* New Behat `heading` named selector to more easily assert the presence of H1-H6 elements on the page
69
* Login can now utilise new param 'loginredirect' to indicate when to use value set for $CFG->alternateloginurl.
70
* \action_menu_link::$instance has been deprecated as it is no longer used.
71
* The `format_string()` method has moved to `\core\formatting::format_string()`.
72
  The old method will be maintained, but new code should use the new method with first-class parameters.
73
* The `format_text()` method has moved to `\core\formatting::format_text()`.
74
  The old method will be maintained, but new code should use the new method with first-class parameters.
75
* The fourth parameter to `format_text` now emits a deprecation notice.
76
  It was originally deprecated in Moodle 2.0.
77
* The smiley option for format_text has been removed. It was deprecated in Moodle 2.0.
78
* The nocache option for format_text has been removed. It was deprecated in Moodle 2.3.
79
* The set_heading() method has a new parameter, $clean, to define whether the heading should be cleaned or not when no formatting
80
  is applied.
81
* The Horde library has been removed from core. It was only used by the tool_messageinbound. Now tool_messageinbound
82
  uses the new RoundCube library.
83
* Visibility of internal properties of the \core\task\manager have been changed from public to protected. These should not have been accessible.
84
  - $miniqueue
85
  - $numtasks
86
  - $mode
87
* Removed \zip_writer::sanitise_filepath and \zipwriter::sanitise_filename as they are now automatically sanitised in the zipstream.
88
* Plugins implementing callback `bulk_user_actions()` should be aware that bulk user actions can be executed
89
  from /admin/user.php as well as from the bulk actions page. The 'returnurl' parameter will be passed in the request.
90
* A new attribute helper has been created at \core\attribute_helper.
91
  This helper contains methods to fetch a single \ReflectionAttribute, or an array of \ReflectionAttribute for an item,
92
  or an instance, or a set of instances.
93
* New generic attributes have been added for:
94
 - \core\attribute\label - An untranslated text label of an object
95
 - \core\attribute\tags - A set of tags for an object
96
* The hook API now supports the use of \core\attribute\label and \core\attribute\tags
97
  as an alternative to implementing the \core\hook\described_hook interface.
98
* The hook API now supports the use of the new \core\attribute\hook\replaces_callbacks() attribute
99
  as an alternative to implementing the \core\hook\deprecated_callback_replacement interface.
100
* The following previously deprecated methods have been removed and can no longer be used:
101
  - `question_preview_url`
102
  - `question_preview_popup_params`
103
  - `question_hash`
104
  - `question_make_export_url`
105
  - `question_get_export_single_question_url`
106
  - `question_remove_stale_questions_from_category`
107
  - `flatten_category_tree`
108
  - `add_indented_names`
109
  - `question_category_select_menu`
110
  - `get_categories_for_contexts`
111
  - `question_category_options`
112
  - `question_add_context_in_key`
113
  - `question_fix_top_names`
114
* Added a new parameter to `core_renderer::container` and `core_renderer::container_start` to allow for the addition of
115
  custom attributes.
116
* Added a new method `navigation_node::add_attribute()` to allow adding HTML attributes to the node.
117
* Deprecated core\hook\manager::is_deprecated_plugin_callback() in favour of ::get_hooks_deprecating_plugin_callback(),
118
  which will return the classnames of hooks deprecating a callback, or null if it's not deprecated. The return value can be cast
119
  to bool if the original functionality is desired.
120
* The triggerSelector method in the `core/comboboxsearch/search_combobox` JS module is deprecated. It was not used.
121
* PHPUnit has been upgraded to 9.6 (see MDL-81266 for details).
122
  The main goal of the update is to allow developers to know in advance,
123
  via deprecations, which stuff is going to stop working (because of being removed)
124
  with PHPUnit 10 (see MDL-80969 for details). Other than that, the changes are minimal.
125
  This is the list of noticeable changes:
126
  - Deprecation: MDL-81281. A number of attribute-related assertions have been deprecated, will
127
    be removed with PHPUnit 10. Alternatives for *some* of them are available:
128
      - assertClassHasAttribute()
129
      - assertClassNotHasAttribute()
130
      - assertClassHasStaticAttribute()
131
      - assertClassNotHasStaticAttribute()
132
      - assertObjectHasAttribute()         => assertObjectHasProperty()
133
      - assertObjectNotHasAttribute()      => assertObjectNotHasProperty()
134
  - Deprecation: MDL-81266. A number of deprecation/notice/warning/error expectations have
135
    been deprecated, will be removed with PHPUnit 10. No alternative exists. A working
136
    replacement is available in the linked issue, hopefully there aren't many cases.
137
      - expectDeprecation()
138
      - expectDeprecationMessage()
139
      - expectDeprecationMessageMatches()
140
      - expectError()
141
      - expectErrorMessage()
142
      - expectErrorMessageMatches()
143
      - expectNotice()
144
      - expectNoticeMessage()
145
      - expectNoticeMessageMatches()
146
      - expectWarning()
147
      - expectWarningMessage()
148
      - expectWarningMessageMatches()
149
  - Deprecation: MDL-81308. The ->withConsecutive() functionality on PHPUnit mocks
150
    has been *silently* deprecated, will be removed with PHPUnit 10. Note that this
151
    won't affect PHPUnit 9.6 runs and an alternative path will be
152
    proposed in the linked issue, part of the PHPUnit 10 epic.
153
  - Deprecation: PHPUnit\Framework\TestCase::getMockClass() has been deprecated, will
154
    be removed with PHPUnit 10. No clear alternative exists and won't be investigated,
155
    because there aren't cases in core.
156
  - Deprecation: Cannot use the "Test" suffix on abstract test case classes. Proceed to
157
    rename them to end with "TestCase" instead.
158
* A new hook called after_failed_task_max_delay has been created. This hook will be triggered when an Ad-hoc or Scheduled task reaches its maximum failure delay.
159
* There is a new method called enrol_plugin::get_welcome_message_contact() that returns the contact details for the course welcome message.
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* There is a new method called enrol_plugin::send_course_welcome_message_to_user() that sends the course welcome message to a user.
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* The list of standard, and deleted, plugins is now located as JSON at lib/plugins.json.
162
* groups_get_user_groups() in grouplib has a new $includehidden paramater, which will return groups for user even if they have
163
  GROUP_VISIBILITY_NONE. This is false by default, and should be used with care. The calling code must ensure that these groups
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  are not exposed to the user as this may be a privacy issue.
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* Added a new `renderer_base::get_page` getter method.
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=== 4.3 ===
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169
* Unnecessary parameters of admin_apply_default_settings() function were removed; upgrade script lists
170
  setting names in the same format as admin UI; default setting writing errors now trigger debugging messages;
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  duplicate setting names (with different plugin part) in one setting page do not cause problems any more.
172
* Added a new render of caption for the table in render_caption. It can be used by
173
  set_caption($caption, $captionattributes).
174
    e.g. $caption = 'Caption for table'
175
    e.g. $captionattributes = ['class' => 'inline'];
176
* Admin settings for passwords (admin_setting_configpasswordunmask) can now be a required field using the following class:
177
    - admin_setting_requiredpasswordunmask
178
* The `$a` argument passed to `get_string` can now include any stringable type, removing the need for explicit casts (for
179
  example, of `\moodle_url` instances)
180
* The badges_get_oauth2_service_options() method has been deprecated, because it's not required anymore. It should no longer
181
  be used.
182
* The following class constants are deprecated, as Sodium is now required and we no longer support the OpenSSL fallback except
183
  when decrypting existing content for backwards compatibility:
184
  - `\core\encryption::METHOD_OPENSSL`
185
  - `\core\encryption::OPENSSL_CIPHER`
186
* The `\core\encryption::is_sodium_installed` method is deprecated, as Sodium is now a requirement
187
* The `drop_plugin_tables` method now returns immediately after deleting tables defined by plugin XMLDB file
188
* Support for the following phpunit coverage info properties, deprecated since 3.11, has been removed:
189
  - `whitelistfolders`
190
  - `whitelistfiles`
191
* The following previously deprecated methods have been removed and can no longer be used:
192
  - `get_extra_user_fields`
193
  - `get_extra_user_fields_sql`
194
  - `get_user_field_name`
195
  - `get_all_user_name_fields`
196
  - `unzip_file`
197
  - `zip_files`
198
* Added a new parameter in address_in_subnet to give us the ability to check for 0.0.0.0 or not.
199
* New method moodleform::add_sticky_action_buttons() is created to enable sticky footer for QuickForms.
200
* Added new \admin_setting::is_forceable() method to determine whether the setting can be overridden or not. Therefore,
201
  whether the settings can be overriden or not will depend on the value of implemented \admin_setting::is_forceable() method,
202
  even if we define the settings in config.php.
203
* New core_renderer::paragraph method to replace the overused html_writer::tag('p', ...) pattern.
204
* All functions associated with device specific themes have been deprecated.
205
  - core_useragent::get_device_type_theme()
206
  - core_useragent::get_device_type_cfg_var_name()
207
  - theme_is_device_locked()
208
  - theme_get_locked_theme_for_device()
209
* Addition of new 'name' field in the external_tokens table.
210
* \core_external\util::generate_token() has a new optional argument "name" used as a token name.
211
* Introduce a new public function \core_external\util::generate_token_name()
212
* Legacy (and custom) Behat --skip-passed option has been removed completely. Please, use the standard
213
  --rerun option that provides exactly the same (execution of failed scenarios only).
214
* Allowed database identifier lengths have been raised:
215
  - From 28 characters to 53 for table names (xmldb_table::NAME_MAX_LENGTH).
216
  - From 30 characters to 63 for column names (xmldb_field::NAME_MAX_LENGTH).
217
  - Maximum length for table prefixes has been set to 10 characters (xmldb_table::PREFIX_MAX_LENGTH). And it's enforced
218
    by environmental checks.
219
* New scheduled tasks show_started_courses_task and hide_ended_courses_task that updates the course visibility when the current
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  day matches course start date/end date. They are disabled by default. Once they are enabled, only courses with start/end dates
221
  near the past 24 hours will be checked. The visibility of these courses will only changed when their start/end dates are higher
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  than the current one, to avoid updating the course visibility early.
223
* New events course_started and course_ended have been created. For now, they are triggered when courses change automatically their
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  visibility through the new scheduled tasks to hide/show courses based on their start/end dates.
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* The action_menu::set_constraint() method is deprecated. Please use action_menu::set_boundary() instead.
226
* New \core\output\activity_header::get_heading_level() method to get the heading level for a given heading level depending whether
227
  the page displays a heading for the activity (usually a h2 heading containing the activity name).
228
* New method moodleform::filter_shown_headers() is created to show some expanded headers only and hide the rest.
229
* count_words() and count_letters() have a new optional parameter called $format to format the text before doing the counting.
230
* New core_renderer::sr_text method to generate screen reader only inline texts without using html_writer.
231
* New events \core\event\qbank_plugin_enabled and \core\event\qbank_plugin_disabled are triggered when a qbank plugin is enabled or
232
  disabled respectively, with the plugin's frankenstyle name. Any plugins that need to perform an action in response to a qbank
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  plugin being enabled or disabled should observe these events.
234
* Code calling to qbank plugins was moved from question_delete_question in questionlib.php into the plugins themselves. Any plugins
235
  that need to perform processing when a question is deleted should observe the \core\event\question_deleted event instead.
236
* The external function core_grades_get_groups_for_selector is now relocated.
237
  Please use it at core_group_get_groups_for_selector instead.
238
* The M.util.show_confirm_dialog function has been rewritten as an ESM to use the core/notification module instead.
239
  See MDL-77174 for further information.
240
* The moodle-core-notification-confirm module, found under the M.core.confirm namespace, has been deprecated.
241
  Any code using it should be rewritten as an ESM and use the core/notification module instead.
242
  See MDL-77174 for further information.
243
* New set of output generic components. Check the component library for more information:
244
  - core\output\local\action_menu\subpanel to add subpanels to action menus.
245
  - core\output\local\dropdown\dialog to display HTML inside a dropdown element.
246
  - core\output\local\dropdown\status to render a user choice into a dropdown.
247
  - core\output\choicelist class to render a list of user choices. It combines with dropdown status and action menu subpanels.
248
* The behat step I choose "WHATEVER" in the open action menu is now compatible with action menus subpanels
249
  using the ">" symbol to suparate the item link text and subitem one. For example:
250
  - I choose "Group mode > Visible groups" in the open action menu
251
* addHelpButton() function has a new optional $a parameter to allow variables with translation strings.
252
* help_icon constructor has a new optional $a parameter to allow variables with translation strings.
253
* The random_bytes_emulate() function has been deprecated, because it's not required anymore. PHP native function random_bytes()
254
  should be used instead.
255
* New behat behat_navigation::i_close_block_drawer_if_open() and behat_navigation::i_keep_block_drawer_closed()
256
to ensure in some test that the block drawer is closed. This helps with random failures due to the block drawer
257
being forced open in all behat tests.
258
* The core_useragent::get_device_type_list() function has been deprecated. Use core_useragent::devicetypes instead as a replacement.
259
* The parameter $size of the following functions has been deprecated and is not used any more:
260
  - file_extension_icon
261
  - file_file_icon
262
  - file_folder_icon
263
  - file_mimetype_icon
264
  - mimeinfo_from_type
265
  - url_guess_icon
266
* The xxxxxxx-yyy.png MIME icons placed in pix/f have been removed and replaced with new SVG files.
267
  In order to reduce the number of icons for the MIME types, a few MIME icons have been removed and
268
  replaced with their generic from the existing ones:
269
    - avi -> video
270
    - base -> database
271
    - bmp -> image
272
    - html -> markup
273
    - jpeg -> image
274
    - mov -> video
275
    - mp3 -> audio
276
    - mpeg -> video
277
    - png -> image
278
    - quicktime -> video
279
    - tiff -> image
280
    - wav -> audio
281
    - wmv -> video
282
  Apart from that, the following MIME icons have been completely removed:
283
    - clip-353 --> It was added in MDL-75362 by mistake.
284
    - edit
285
    - env
286
    - explore
287
    - folder-open
288
    - help
289
    - move
290
    - parent
291
* The signature of the static method `can_user_share` in the `core\moodlenet\local\can_share_manager` class has been updated to include an additional parameter `$type`.
292
  This parameter specifies the type of resource being checked for sharing capabilities, which can either be 'activity' or 'course'.
293
* The method 'share_activity' in 'core\moodlenet\activity_sender' class has been deprecated and renamed to 'share_resource'. The method signature is the same as before and
294
  the new method is coming from the base class 'core\moodlenet\resource_sender'.
295
* Final deprecation and removal of legacy cron. This includes the functions:
296
  - cron_execute_plugin_type()
297
  - cron_bc_hack_plugin_functions()
298
  Please, use the Task API instead: https://moodledev.io/docs/apis/subsystems/task
299
* Final deprecation and removal of the following classes:
300
  - \core\task\legacy_plugin_cron_task
301
  - \mod_quiz\task\legacy_quiz_reports_cron
302
  - \mod_quiz\task\legacy_quiz_accessrules_cron
303
  - \mod_workshop\task\legacy_workshop_allocation_cron
304
  Please, use the Task API instead: https://moodledev.io/docs/apis/subsystems/task
305
* New method login_captcha_enabled() is created to check whether the login captcha is enabled or not.
306
* New method validate_login_captcha() is created to validate the login captcha.
307
* A new parameter $loginrecaptcha has been added to the authenticate_user_login() to check whether the login captcha is needed to verify or not. The default value is false.
308
* A new parameter $compactmode has been added to the recaptcha_get_challenge_html() to define whether the reCaptcha element should be displayed in the compact mode or not.
309
  Default value is false.
310
* A new native event in the `core_filters/events` AMD module eventTypes.filterContentRenderingComplete has been created to determine when the filter is complete the rendering.
311
* New parameters for \get_time_interval_string():
312
  - `$dropzeroes` - Passing `true` will exclude zero date/time units from the output.
313
  - `$fullformat` - Passing `true` will return date/time units in full format (e.g. `1 day` instead of `1d`).
314
* The print_object function (for temporary debugging use only) can now be used on objects that have recursive references,
315
  and has an improved display and other changes. (New parameters are available; see function documentation.)
316
* New `filteroptions` field added to getFilterValue() in core/datafilter/filtertype. This is generated by `get filterOptions()`
317
  and returns an arbitrary list of options specific to the filter type, in [{name:, value}] format. This allows filters to extend
318
  the values returned with additional fields.
319
* New `required` field added to core\output\datafilter. This will be output via the data-required property in filter_type.mustache,
320
  any additional filter types will need to output this property as well. Filters with data-required="1" will not be removable from
321
  the list of filters.
322
* addFilterRow() in core/datafilter now accepts a filterdata object to add a row with a pre-defined filter.
323
* New "binary" datafilter type added for creating filters with a single yes/no option.
324
* New "joinlist" parameter added to core\output\datafilter::get_filter_object(). This takes an array of datafilter::JOINTYPE_*
325
  constants to define which types of join the filter supports. By default this will include all three of "Any", "All" and "None",
326
  but a subset can be specified instead.
327
* core/form-autocomplete now supports disabled options in the source select list. These will be displayed in the autocomplete
328
  options with the aria-disabled attribute, and will not be selectable.
329
* The method grade_item::set_locked() now returns true if the grade item needs to be updated. The method schedules the locking of
330
  the grade item once the recalculations are completed. (This was fixed in 4.3, 4.2.2)
331
* Added a new constant called MAX_PASSWORD_CHARACTERS in moodlelib.php to hold a length of accepted password.
332
* Added a new method called exceeds_password_length in moodlelib.php to validate the password length.
333
* The core/modal_factory has been deprecated. From Moodle 4.3 onwards pleáse instantiate new modals using the ModalType.create method instead.
334
  Please note that this method does not support the `trigger` option.
335
* \moodle_page::set_title() has been updated to append the site name depending on the value of $CFG->sitenameintitle and whether
336
  the site's fullname/shortname has been set. So there's no need to manually add the site name whenever calling $PAGE->set_title().
337
  If it's necessary to override this, pass `false` to its new optional parameter `$appendsitename`.
338
* New page title separator constant `moodle_page:TITLE_SEPARATOR` has been created to help standardise the separators used in page
339
  titles.
340
* New Behat step \behat_general::the_page_title_should_contain() has been added to allow checking of page titles. You can use this
341
  when writing feature files to check that the page title contains the expected string.
342
  e.g. `And the page title should contain "Some title"`
343
* Ensure that all system icons now come with an accompanying SVG file. Any missing SVG files have been addressed, and to maintain
344
  this consistency, a PHPUnit test has been implemented to validate the inclusion of SVG files for any new icons.
345
* The $CFG->svgicons setting has been removed because all modern browsers now handle SVG files correctly.
346
* The method `\core_renderer->supportemail()` has an updated signature. It now allows a second optional parameter.
347
  Set it to true if you want to embed the generated link in other inline content.
348
* The users_search_sql function parameter $searchanywhere has been change to $searchtype for different type of search. $searchtype is a int parameter and has three constant value:
349
  USER_SEARCH_STARTS_WITH: 0, USER_SEARCH_CONTAINS: 1, USER_SEARCH_EXACT_MATCH: 2
350
  See MDL-78312 for further information.
351
* Function course_modinfo::clear_instance_cache now has an extra optional parameter $newcacherev, although this is really
352
  intended only for use by rebuild_course_cache.
353
 
354
=== 4.2 ===
355
 
356
* All context classes were moved to \core\context namespace while keeping full backwards compatibility.
357
  Please note it is not necessary to update plugins unless they rely on exact class names returned from
358
  get_class() or context_helper.
359
* Travis CI integration has been removed from core (MDLSITE-7135). Please, use GitHub Actions (GHA) instead. For
360
  more information visit https://moodledev.io/general/development/tools/gha
361
* A new constant COMPLETION_COMPLETE_FAIL_HIDDEN is introduced to mark that user has received a failing grade
362
  for a hidden grade item. This state returned by internal_get_grade_state() and is only used by get_core_completion_state()
363
  for processing the passgrade completion data.
364
* \single_button constructor signature has been changed to manage more types than just primary buttons.
365
  The boolean "primary" parameter has been deprecated and replaced by a more generic type allowing to use
366
  Bootstrap styles of buttons (danger, warning...). The constructor will still manage the boolean primary
367
  parameter but will display a debugging message.
368
* In enrollib.php, the methods get_enrolled_with_capabilities_join, get_enrolled_sql, get_enrolled_users and
369
  count_enrolled_users used to only be able to accept a single group id, even though internally, they used
370
  groups_get_members_join which could also accept an array of groups, or the constant USERSWITHOUTGROUP.
371
  This has now been made consistent. These enrol methods now accept all the group-related options that
372
  groups_get_members_join can handle.
373
* assign_capability() now has an optional $performancehints parameter which can be used in
374
  situations where it is being called in a loop in response to a database query, to reduce the
375
  amount of checks it has to do.
376
* New DB parameter 'versionfromdb', only available for MySQL and MariaDB drivers. It allows to force the DB version to be
377
  evaluated through an explicit call to VERSION() to skip the PHP client version which appears to be sometimes fooled by the
378
  underlying infrastructure, e.g. PaaS on Azure.
379
* The actionmenu component has now a set_kebab_trigger that will setup the action menu for use in kebab menus.
380
* The useexternalyui configuration setting has been removed as a part of the migration away from YUI.
381
  It only worked with http sites and did not officially support SSL, and is at risk of disappearing should Yahoo! decide
382
  to remove it.
383
* New `properties_filter` method of persistent class for filtering properties of a record against persistent definition
384
* Added 'extrainfo' in the DB options config. Its extra information for the DB driver, e.g. SQL Server
385
  has additional configuration according to its environment, which the administrator can specify to alter and
386
  override any connection options.
387
* In outputcomponents.php, initials_bar() can now be rendered in a smaller (mini) way. This provides purely the
388
  initials bar without the bootstrapping and form handling on each initials bar. If you use this mini render,
389
  you'll need to implement your own form handling. Example usage can be found within the grader report.
390
* There is a new helper function mtrace_exception to help with reporting exceptions you have caught in scheduled tasks.
391
* Box/Spout has been archived and is no longer maintained, so it has now been removed and replaced by OpenSpout.
392
* The following parts of the external API have been moved to the core_external subsystem:
393
  Classes:
394
    - external_api                      => core_external\external_api
395
    - external_description              => core_external\external_description
396
    - external_files                    => core_external\files
397
    - external_format_value             => core_external\external_format_value
398
    - external_function_parameters      => core_external\external_function_parameters
399
    - external_multiple_structure       => core_external\external_multiple_structure
400
    - external_settings                 => core_external\external_settings
401
    - external_single_structure         => core_external\external_single_structure
402
    - external_util                     => core_external\util
403
    - external_value                    => core_external\external_value
404
    - external_warnings                 => core_external\external_warnings
405
    - restricted_context_exception      => core_external\restricted_context_exception
406
  Functions:
407
    - external_format_string()          => core_external\util::format_string()
408
    - external_format_text()            => core_external\util::format_text()
409
    - external_create_service_token()   => core_external\util::generate_token()
410
    - external_generate_token()         => core_external\util::generate_token()
411
    - external_generate_token_for_current_user()
412
                                        => core_external\util::generate_token_for_current_user()
413
    - external_log_token_request        => core_external\util::log_token_request()
414
 
415
  The old class locations have been aliased for backwards compatibility and will emit a deprecation notice in a future
416
  release.
417
* The following methods, deprecated since 3.10, have been removed and can no longer be used:
418
  - `\core\output\mustache_helper_collection::strip_blacklisted_helpers`
419
  - `\core_form\filetypes_util::is_whitelisted`
420
  - `\core_form\filetypes_util::get_not_whitelisted`
421
* Convert a floating value to an integer in lib/graphlib.php to avoid PHP 8.1 deprecated function error.
422
* The $required parameter for \core_external\external_description is now being validated in order to prevent
423
  unintentionally passing incorrect parameters to the external_description's (and its subclasses') constructors (e.g. the parameter
424
  description being incorrectly passed for the $required parameter). A debugging notice will be shown when such cases occur.
425
* The moodle-core-popuphelp YUI modal has been removed. It has not been actively used in Moodle since 3.3. It should be replaced with appropriate ESM/AMD JavaScript.
426
* The moodle-core-tooltip YUI modal has been removed. It should be replaced with appropriate ESM/AMD JavaScript.
427
* A `\core\event\role_created` event is now triggered when roles are created via the `create_role` API.
428
* Event \core\event\user_created is now triggered if the user is created during course restore. In this case
429
  $event->other has properties 'restoreid' and 'courseid'.
430
* The core/modal module and all their versions (SAVE_CANCEL, DELETE_CANCEL...) now has a setButtonDisable to disable or enable
431
  specific modal action buttons. This function allows developers to have modals that could only be submited if the user do some
432
  action in the modal body like ticking a checkbox or selecting an element.
433
* Course module indentation has been recovered for course format using components via Move right/left feature.
434
  Course formats using components will be allowed to use one level indentation only.
435
* The method `flexible_table::set_columnsattributes` now can be used with 'class' key to add custom classes to the DOM.
436
* The editor_tinymce plugin has been removed from core.
437
* A new grunt task, upgradablelibs, has been added to get the list of libraries that have a newer version in their repositories.
438
* Support for serving of AMD modules built in really old versions of Moodle (<= 3.8) has been removed.
439
  Please ensure that your AMD modules have been rebuilt with a supported Moodle version.
440
* Addition of new 'visibility' and 'participation' fields in the groups table, and 'moodle/group:viewhiddengroups' capability.
441
  The following grouplib functions will now return groups and members based on group visibility and the user's permissions:
442
   - groups_get_all_groups()
443
   - groups_get_user_groups()
444
   - groups_get_my_groups()
445
   - groups_is_member()
446
   - groups_get_members()
447
   - groups_get_groups_members()
448
  groups_print_activity_menu() will now only return groups where particiation == true.
449
* Cron utility functions have been moved from the global namespaces to the \core\cron class, these include:
450
  - cron_setup_user()                => \core\cron::setup_user()
451
  - cron_run()                       => \core\cron::run_main_process()
452
  - cron_run_scheduled_task()        => \core\cron::run_scheduled_tasks()
453
  - cron_run_adhoc_task()            => \core\cron::run_adhoc_tasks()
454
  - cron_run_inner_scheduled_task()  => \core\cron::run_inner_scheduled_task()
455
  - cron_run_inner_adhoc_task()      => \core\cron::run_inner_adhoc_task()
456
  - cron_set_process_title()         => \core\cron::set_process_title()
457
  - cron_trace_time_and_memory()     => \core\cron::trace_time_and_memory()
458
  - cron_prepare_core_renderer()     => \core\cron::prepare_core_renderer()
459
* The `run_scheduled_tasks` and `run_adhoc_tasks` functions take an additional parameter to calculate the start of a run.
460
* The following phpunit advanced testcase helper methods, deprecated since 3.10, have been removed and can no longer be used:
461
  - `createXMLDataSet`
462
  - `createCsvDataSet`
463
  - `createArrayDataSet`
464
  - `loadDataSet`
465
* The external function core_grades_get_enrolled_users_for_search_widget is now deprecated.
466
  Please use the new core_grades_get_enrolled_users_for_selector external function instead.
467
* The external function core_grades_get_groups_for_search_widget is now deprecated.
468
  Please use the new core_grades_get_groups_for_selector external function instead.
469
* New \core_component::has_monologo_icon() that determines whether a plugin has monologo icons. This can be used to
470
  determine whether to apply CSS filtering to the plugin's icon when rendering it.
471
* \cm_info::get_icon_url() resolves the icon's file type and adds a `filtericon` parameter in the URL when rendering the monologo
472
  version of the course module icon or when the plugin declares, via its `filtericon` custom data, that the icon needs to be
473
  filtered. This additional information can be used by plugins when rendering the module icon to determine whether to apply
474
  CSS filtering to the icon.
475
* Activity plugins displaying activity module icons using \cm_info::get_icon_url() can declare the `filtericon` custom data in their
476
  `get_coursemodule_info()` callback. If set, this will be used by \cm_info::get_icon_url() to set the icon URL's `filtericon`
477
  parameter. This information can be used by the plugins when enclosing the icons in `.activityiconcontainer .icon` or
478
  `.activityiconcontainer .activityicon` containers to determine whether CSS filtering should be applied to the icon. If the icon
479
  needs to be rendered as is and not whitened out, the `.nofilter` CSS class needs to be applied to the icon.
480
* New moodle_url::export_params_for_template() returns the params as an array of key => value pairs. You should use this when
481
  you want to pass URL params to a template. An example can be found in single button.
482
* Functions get_next_adhoc_task() and cron::run_adhoc_tasks() have additional parameter $classname to filter by the specified class.
483
* Function cron::run_adhoc_tasks() has additional parameter $number to limit the number of the tasks to run.
484
* Function get_adhoc_tasks() has additional parameter $failedonly to return only failed tasks.
485
* admin/cli/adhoc_task.php has additional parameters:
486
  - id - to run individual tasks by id
487
  - classname - to run tasks by classname
488
  - taskslimit - to limit the number of tasks in one run
489
  - failed - to limit the run to only the tasks that failed in their previous run
490
  Can be mixed, apart from 'id' of course.
491
* The file_system class now declares a new, optional, `get_psr_stream` function which allows a Stream implementing `\Psr\Http\Message\StreamInterface` to be returned.
492
  A default implementation which uses the existing file handle resource is used by default, but this should be extended by file_system implementations where relevant.
493
 
494
=== 4.1 ===
495
 
496
* HTMLPurifier has been upgraded to the latest version - 4.16.0
497
* A process to deprecate capabilities by flagging them in the access.php by adding a $deprecatedcapabilities variable (an array).
498
  This array will list the deprecated capabilities and a possible replacement. Once we declare the capability as deprecated, a debugging
499
  message will be displayed (in DEBUG_DEVELOPPER mode only) when using the deprecated capability.
500
  Declaration is as follow:
501
    $deprecatedcapabilities = [
502
        'fake/access:fakecapability' => ['replacement' => '', 'message' => 'This capability should not be used anymore.']
503
    ];
504
* coursemodinfo cache uses the new `requirelockingbeforewrite` option, and rebuilding the cache now uses the cache lock API, rather
505
  than using the core lock factory directly. This allows the locks to be stored locally if the cache is stored locally, and
506
  avoids the risk of delays and timeouts when multiple nodes need to rebuild the cache locally, but are waiting for a central lock.
507
* Final deprecation and removal of the class \admin_setting_managelicenses, please use \tool_licensemanager\manager instead.
508
* Final deprecation and removal of the function license_manager::add(). Please use license_manager::save() instead.
509
* Final deprecation of the following functions behat_field_manager::get_node_type() and behat_field_manager::get_field()
510
  please call behat_field_manager::get_field_node_type() and behat_field_manager::get_form_field().
511
* Final deprecation and removal of the following class, please use \core\task\manager.
512
    - \tool_task\run_from_cli
513
* Final deprecation and removal of the following CLI scripts:
514
  - admin/tool/task/cli/schedule_task.php please use admin/cli/scheduled_task.php
515
  - admin/tool/task/cli/adhoc_task.php please use admin/cli/adhoc_task.php
516
* Final deprecation and removal of cron_run_single_task(), please use \core\task\manager::run_from_cli().
517
* The $USER->groupmember hack that fills the user object with the groups that the user belongs to has been removed.
518
  Please use the Groups API function groups_get_user_groups() to fetch the cached list of groups the user is a member of.
519
* The following functions, previously used (exclusively) by upgrade steps are not available anymore
520
  because of the upgrade cleanup performed for this version. See MDL-71747 for more info:
521
    - upgrade_analytics_fix_contextids_defaults()
522
    - upgrade_convert_hub_config_site_param_names()
523
    - upgrade_rename_prediction_actions_useful_incorrectly_flagged()
524
* The method ensure_adhoc_task_qos() in lib/classes/task/manager.php  has been deprecated, please use get_next_adhoc_task()
525
  instead.
526
* New setting $CFG->enrolments_sync_interval controls the minimum time in seconds between re-synchronization of enrollment via enrol_check_plugins.
527
  This only applies to web requests without a session such as webservice calls, tokenpluginfile.php and rss links Function
528
  enrol_check_plugins now has $ignoreintervalcheck flag to bypass checking for that setting.
529
* For performance reasons, sql_reader interface has a new function get_events_select_exists() which determines whether
530
  an event exists with the given criteria (see MDL-72723 for details).
531
   - Breaking: 3rd party log readers implementing interface sql_reader will need to implement get_events_select_exists()
532
* Added $strictness parameter to persistent `get_record` method, optionally allowing caller to ensure record exists
533
* New DML driver method `$DB->sql_cast_to_char` for casting given field/expression to char
534
* The core renderer `edit_button` method now accepts an optional `$method` argument (get/post) for the button
535
* For plugins that override secondary navigation, the namespace for the custom secondary navigation class has
536
  changed. It was (for example) mod_mymodule\local\views\secondary but is now
537
  mod_mymodule\navigation\views\secondary. The old location will continue to work, but is deprecated.
538
* The check for $plugin->incompatible was found to be incorrect. The $plugin->incompatible attribute is meant to define the minimum
539
  Moodle version the plugin is incompatible with but the implemented logic for the check was the opposite. Plugins declaring this
540
  attribute may encounter different behaviours between older Moodle versions (<v3.11.8, <v4.0.2) and the later ones. We recommend
541
  plugin developers to not use this attribute for Moodle versions 4.0 and below in order to avoid this problem.
542
* Added $CFG->proxylogunsafe and proxyfixunsafe to detect code which doesn't honor the proxy config
543
* Function admin_externalpage_setup() now has additional option 'nosearch' allowing to remove Site administration search form.
544
* The function print_error has been deprecated. Kindly use moodle_exception.
545
* When exporting table content, HTML tags/entities will be removed when the selected dataformat does not support HTML
546
* The abstract `get_name` method has been moved from `\core\task\scheduled_task` to the `\core\task\task_base` class and can now be
547
  implemented by adhoc tasks. For backwards compatibility, a default implementation has been added to `\core\task\adhoc_task` to
548
  return the class name.
549
* The function get_module_metadata() has been finally deprecated and can not be used anymore.
550
* New DML driver method `$DB->sql_order_by_null` for sorting nulls sort nulls first when ascending and last when descending.
551
* Allow plugins to callback on all pages just prior to the session start.
552
* New function set_additional_classes() has been implemented to add additional classes to action_menu.
553
* Most Behat functionality for the Moodle App has been removed from core, refer to the documentation in order to upgrade your testing
554
  setup: https://moodledev.io/general/app/development/testing/acceptance-testing#upgrading-tests-from-an-older-version
555
* New DML driver methods `$DB->sql_regex_get_word_beginning_boundary_marker` and `$DB->sql_regex_get_word_end_boundary_marker`
556
  for managing word boundary markers in a database driver supporting regex syntax when searching.
557
* The plugin_functions cache in core has been made localisable by prefixing the
558
  key it uses with the all versions hash, which only changes when there are code
559
  changes.
560
 
561
=== 4.0 ===
562
 
563
* To better detect wrong floats (like, for example, unformatted, using local-dependent separators ones) a number of
564
  gradebook functions now have stricter float type checking. All them will require now the "float" being passed to be
565
  a correct float value (numeric or string). Usually, that's achieved by using unformat_float() or
566
  PARAM_LOCALISEDFLOAT for all the user-entered grades before any processing on them. Functions affected are:
567
    - grade_format_gradevalue(), $value param (keeping it as optional/nullable).
568
    - grade_format_gradevalue_real(), $value param (keeping it as optional/nullable).
569
    - grade_format_gradevalue_percentage(), $value param (keeping it as optional/nullable).
570
    - grade_format_gradevalue_letter(), $value param (keeping it as optional/nullable).
571
    - grade_floats_different(), $f1 and $f2 params (keeping them as optional/nullable).
572
    - grade_floats_equal(), $f1 and $f2 params (keeping them as optional/nullable).
573
* The method action_menu->set_alignment() has been deprecated, please use action_menu->set_menu_left if you need a dropdown
574
  to align to the left of the dropdown button.
575
* The $OUTPUT->should_display_main_logo() function has been deprecated and should no longer be used.
576
* New method flexible_table::set_columnsattributes() has been introduced to add column attributes applied in every cell.
577
* New method flexible_table::get_row_cells_html() has been introduced, extracted from flexible_table::get_row_html
578
  so it can be overriden individually.
579
* Since Boxnet has been remove from core then boxnet_client() class has been removed from core too.
580
* New navigation classes to mimic the new navigation project. The existing navigation callbacks are still available and
581
  will be called. The following behaviour will be the new standard for nodes added via callbacks in Boost and Boost-based themes:
582
  - Module nodes added will be appended to the end and will appear within the More menu.
583
  - Course nodes added will also be appended and appear within the 'More' menu.
584
* The core/event events have been renamed and now fire native events, in addition to the legacy YUI and jQuery events.
585
  The following events have been renamed:
586
  - The BLOCK_CONTENT_UPDATED event has been replaced with a new native event in the `core_block/events` AMD module
587
    eventTypes.blockContentUpdated.
588
  - The EDITOR_CONTENT_RESTORED event has been replaced with a new native event in the `core_editor/events` AMD module
589
    eventTypes.editorContentRestored.
590
  - The FILTER_CONTENT_UPDATED event has been replaced with a new native event in the `core_filters/events` AMD module
591
    eventTypes.filterContentUpdated.
592
  - The FORM_FIELD_VALIDATION event has been replaced with a new native event in the `core_form/events` AMD module
593
    eventTypes.formFieldValidationFailed.
594
  - The FORM_SUBMIT_AJAX event has been replaced with a new native event in the `core_form/events` AMD module
595
    eventTypes.formSubmittedByJavascript.
596
* The block template now includues a block-instanceid data attribute.
597
* The core/event::getLegacyEvents() function has been deprecated and should no longer be used.
598
* Typo3 has now been removed. Use native mbstring or iconv functions.
599
* A new index has been added on mdl_user_preferences.name. This upgrade step might take some time on big sites.
600
* The completion_info function display_help_icon() which returned the 'Your progress' help icon has been deprecated and
601
  should no longer be used.
602
* The completion_info function print_help_icon() which has been deprecated since Moodle 2.0 should no longer be used.
603
* @babel/polyfill has been removed in favour of corejs@3.
604
* A new parameter $partialrebuild has been added to the rebuild_course_cache to invalidate the cache
605
  of the section or module only, not the whole course cache
606
* A new parameter $isbulkupdate has been added to the following functions:
607
  - grade_category::update()
608
  - grade_category::insert()
609
  - grade_grade::update()
610
  - grade_grade::insert()
611
  - grade_grade::notify_changed()
612
  - grade_item::insert()
613
  - grade_item::update()
614
  - grade_item::update_final_grade()
615
  - grade_item::update_raw_grade()
616
  - grade_object::update()
617
  - grade_object::insert()
618
  - grade_outcome::update()
619
  - grade_outcome::insert()
620
  - grade_scale::update()
621
  - grade_scale::insert()
622
  - grade_update()
623
  - completion_info::inform_grade_changed()
624
  - completion_info::update_state()
625
  - completion_info::internal_set_data()
626
  All functions except completion_info::internal_set_data() are only passing this parameter from very beginning of
627
  workflow (like grade report page where bulk grade update is possible) so this parameter is used in
628
  completion_info::internal_set_data() to decide if we need to mark completions instantly without waiting for cron.
629
* Following methods now return an int instead of bool:
630
  - completion_completion::_save()
631
  - completion_completion::mark_enrolled()
632
  - completion_completion::mark_inprogress()
633
  - completion_completion::mark_complete()
634
  which is needed to store id of completion record on successful update which is later beeing used by
635
  completion_info::internal_set_data() to reaggregate completions that have been marked for instant course completion.
636
* The following functions have been finally deprecated and can not be used anymore:
637
  - generate_uuid
638
* The YUI moodle-core-formchangechecker module has been deprecated and replaced with a new AMD module
639
  core_form/changechecker.
640
* New method \core_user::awaiting_action() has been introduced to check if the user is fully ready to use the site or
641
  whether there is an action (such as filling the missing profile field, changing password or agreeing to the site
642
  policy) needed.
643
* The signature of the get_name() function for grade_category and grade_item has been extended. The new parameter allows
644
  callers to get the name without escaped characters.
645
* The inplace_editable element constructor now accepts an optional pix_icon parameter to use as it's editing icon when
646
  rendered. The default icon for "select" types has also changed to a dropdown caret ("t/expanded").
647
* The inplace_editable Javascript module now emits native events, removing the jQuery dependency from calling code
648
  that wants to listen for the events. Backwards compatibility with existing code using jQuery is preserved.
649
* The function message_send() in messagelib.php now returns false if there is an error sending the message to the
650
  message processor (MDL-70046).
651
* Moodle 4.0 has major changes to the question bank. Therefore, there are major changes in questionlib.php
652
  and the core_question database tables. These are documented in detail in question/upgrade.txt.
653
* The postgres driver now wraps calls to pg_field_type() and caches them in databasemeta to save an invisible internal
654
  DB call on every request.
655
* The default type of 'core/toast' messages has been changed to 'information' (callers can still explicitely set the type)
656
* As the message_jabber notification plugin has been moved to the plugins database, the XMPPHP library (aka Jabber) has been
657
completely removed from Moodle core too.
658
* The SWF media player has been completely removed (The Flash Player was deprecated in 2017 and officially discontinued
659
  on 31 December 2020).
660
* The display_size function has been improved to add new optional parameters (decimal places,
661
  fixed units), to always include a non-breaking space between the number and unit, and to use
662
  consistent rounding (always 1 decimal place by default).
663
* The persistent method get() now returns the correct type for each property defined in the persistent class.
664
* The persistent method from_record() now only attempts to load record properties defined in the persistent class.
665
* New persistent set_many() helper for setting multiple properties in single method call.
666
* Require pass grade criteria is now part of core.
667
  Refer to upgrade.php to see transitioning from similar plugin criteria to core
668
  Refer to completion/upgrade.txt for additional information.
669
* The method enable_plugin() has been added to the core_plugininfo\base class and it has been implemented by all the plugininfo
670
classes extending it. When possible, the enable_plugin() method will store these changes into the config_log table, to let admins
671
check when and who has enabled/disabled plugins.
672
* Final deprecation: The following functions along with associated tests have been removed:
673
  - core_grades_external::get_grades
674
  - core_grades_external::get_grade_item
675
  - report_insights_context_insights
676
* \core\session\manager::init_empty_session() has a new optional parameter $newsid to indicate whether this is a new user session
677
* New html_table attribute "$responsive" which defaults to true. When set to true, tables created via html_writer::table() will be enclosed
678
  in a .table-responsive div container which will allow the table to be scrolled horizontally with ease, especially when the table is rendered in smaller viewports.
679
  Set to false to prevent the table from being enclosed in the responsive container.
680
* Two new helper functions have been added to lib/datalib.php, for safely preparing SQL ORDER BY statements where user
681
  interactions define sort parameters (see the respective docblocks for full details and examples):
682
  -get_safe_orderby() - where a single sort parameter is required.
683
  -get_safe_orderby_multiple() - where multiple sort parameters are required.
684
* Added the cleanstr mustache template helper to clean strings after loading them from language packs.
685
* The following behat functions have been modified to work with the new navigation
686
  - i_add_the_block
687
  - the_add_block_selector_should_contain_block
688
  - the_add_block_selector_should_contain_block
689
  - go_to_the_current_course_activity_completion_report
690
  - i_navigate_to_course_participants
691
  - i_go_to_advanced_grading_page
692
  - i_navigate_to_in_the_course_gradebook
693
  - should_exist_in_current_page_administration
694
  - should_not_exist_in_current_page_administration
695
  - go_to_main_course_page
696
  - select_on_administration_page
697
  - find_header_administration_menu
698
  - select_from_administration_menu
699
  - i_edit_the_lesson
700
  - i_add_a_question_filling_the_form_with
701
* The following behat step has been deprecated
702
  - i_select_from_flat_navigation_drawer
703
* The type for the "message" field in the external_warnings() structure has been changed from PARAM_TEXT to PARAM_RAW
704
* A new parameter $displayoptions has been added to the core_renderer::confirm() to allow better customization for confirming page
705
such as the title and strings for continue and cancel buttons.
706
* The method get_enabled_plugin($pluginname) has been added to the core_plugininfo\base class. It has a default implementation for
707
all the plugininfo classes and it can be overwritten when required (like it has been done with filter). This method returns the
708
current value for a pluginname depending on its status (enabled, disabled, other...).
709
* Unit Test coverage defaults have been updated to include some sensible defaults.
710
  The default values now include:
711
  * /classes/
712
  * /tests/generator/
713
  * /externallib.php
714
  * /lib.php
715
  * /locallib.php
716
  * /renderer.php
717
  * /rsslib.php
718
  This default applies both when there is no supplied coverage.php file, and is used to supplement any existing coverage configuration file if one is found.
719
* New method get_unaddable_by_theme_block_types() has been added to block_manager class. It uses the 'unaddableblocks' theme setting
720
value to get the list of blocks that won't be displayed for a theme.
721
* Loggedin / Loggedoff component settings on notification preferences have been merged to a single enabled switch:
722
  MESSAGE_DEFAULT_LOGGEDIN and MESSAGE_DEFAULT_LOGGEDOFF are now deprecated, so plugins should be updated if db/messages.php is present and replace
723
    MESSAGE_DEFAULT_LOGGEDIN + MESSAGE_DEFAULT_LOGGEDOFF to MESSAGE_DEFAULT_ENABLED. Backward compatibility will take any of both settings as enabled.
724
  MESSAGE_DEFAULT_PERMITTED also deprecated.
725
  core_message_get_user_notification_preferences and core_message_get_user_message_preferences Webservice are now returning enabled boolean on
726
    components > notifications > processors. loggedin and loggedoff are deprecated but present for backward compatibility.
727
* A new parameter $strength of type int is added to method search_for_active_node. This parameter would help us to search for the active nodes based on the
728
  $strength passed to it.
729
* A new method get_page() has been added to the settings_navigation class. This method can be used to obtain the
730
  moodle_page object associated to the settings navigation.
731
* A new interface, `core\output\named_templatable` has been created to allow renderable classes to define a
732
  `get_template_name(\renderer_base): string` function which will inform the default render() function with a template
733
  name.
734
* The parameter $modinfo of the get_data method in completion_info class has been deprecated and is not used anymore.
735
* A new method, get_default_home_page(), has been added to moodlelib to get the default home page to display if current one is not
736
defined or can't be applied.
737
* A new language_menu renderable is created to handle collecting available languages and generating the menu for use in different situations
738
* New primary navigation classes to mimic the primary nav. Consists of the views/primary.php and output/primary.php. The
739
  base nodes are added within the views/primary.php while output/primary.php is a renderable that combines the primary
740
  view and the lang, user and any custom menu items.
741
  - The language menu now resides within the user menu.
742
* New primary and secondary magic getters/setters included in pagelib.php that also initialises the objects
743
* All secondary navigation nodes have a predefined ordering within the relevant context and are defined as a
744
  mapping construct within core\navigation\views\secondary. Secondary navigation ordering can be overridden by
745
  generating a custom secondary class within a plugin's {plugin}\local\views namespace. This is only applicable to the
746
  following plugin types and is automatically loaded:
747
    * Module - refer to mod_assign\local\views\secondary for examples and magic_get_secondarynav for calling code
748
    * Block - refer to core_block\local\views\secondary for examples and blocklib::get_secondarynav for calling code
749
  - Additionally a custom secondary object may be set using the convenient setters in pagelib.php.
750
  - Secondary nav nodes can be forced into the 'More' menu using the 'set_force_into_more_menu'. It is advisable to set
751
    this in the existing nav callbacks when generating the nodes. Alternately, the corresponding
752
    'get_default_{admin/course/module}_more_menu_nodes functions in secondary can be overridded to provide a custom set
753
    of node keys to push into the more menu
754
  - The secondary navigation can be omitted from a theme/page by setting $PAGE->set_secondary_navigation(false). e.g. admin/search.php and in classic.
755
  - Within a single activity course format, the course and module level secondary navigation options are displayed within
756
    dropdowns in the secondary navigation bar
757
* New function 'get_overflow_menu_data' introduced in core\navigation\views\secondary to get additional/custom sub navigation
758
  to be displayed as a url_select for tertiary navigation.
759
* It is required that the action provided to navigation_node::create be of type moodle_url/action_link. Non conformance
760
  results in a debugging message being thrown.
761
* New page lib config '_navigationoverflow' and associated getters/setters to toggle whether the overflow menu is displayed
762
* New functions to explicitly set what tabs should be highlighted on the primary and secondary navigation
763
* Breadcrumbs modified to follow standards defined here https://www.nngroup.com/articles/breadcrumbs/
764
  - New navbar class in boost to follow the standards defined above.
765
* Settings cog have been removed and replaced with either secondary and tertiary navigation components
766
* New activity_header class to handle display of common content for plugins.
767
  * Handles display of the activity name, completion information and description.
768
  * New pagelib.php magic getters to fetch activity_header
769
  * New theme level config to govern display of the activity name $THEME->activityheaderconfig['notitle']
770
        - Default for boost is to show no activity title.
771
  * New page layout level option to handle display within activity header. Options should be defined
772
    within 'activityheader' and accept the following array keys:
773
        - notitle
774
        - nocompletion
775
        - nodescription
776
  * Convenient functions to set the parameters in the header OR hide them altogether.
777
* Category navigations has been updated with a preference of tertiary navigation components over buttons within the page
778
  content and/or context header actions
779
* A new 'My courses' page has been introduced which houses the course overview block
780
* Default blocks for dashboard has been updated. The page will now have the following in the corresponding region:
781
    * Calendar, Timeline - Center
782
    * Recently accessed courses - Side bar/blocks drawer
783
* Flat navigation classes have been marked for deprecation with the introduction of primary and secondary navigation concepts.
784
* A new method, force_lock_all_blocks(), has been added to the moodle_page class to allow pages to force the value of
785
  user_can_edit_blocks() to return false where necessary. This makes it possible to remove block editing on a page
786
  from ALL users, including admins, where required on pages with multi region layouts exist, such as "My courses".
787
* Add an early $CFG->session_redis_acquire_lock_warn option
788
* Removed $CFG->conversionattemptlimit setting from config.php. assignfeedback_editpdf\task\convert_submissions task
789
  is now replaced with adhoc tasks with standard fail delay approach.
790
* With strftime() being deprecated in PHP 8.1, a new function \core_date::strftime() that can be used as a PHP 8.1-compatible
791
  alternative has been introduced.
792
 
793
=== 3.11.4 ===
794
* A new option dontforcesvgdownload has been added to the $options parameter of the send_file() function.
795
  Note: This option overrides the forced download of directly accessed SVGs, so should only be used where the calling method is
796
  rendering SVGs directly for content created using XSS risk flagged capabilities (such as creating a SCORM activity).
797
  This is also not necessary where SVGs are already being safely loaded into <img> tags by Moodle (eg within forum posts).
798
 
799
=== 3.11.2 ===
800
* For security reasons, filelib has been updated so all requests now use emulated redirects.
801
  For this reason, manually disabling emulateredirects will no longer have any effect (and will generate a debugging message).
802
 
803
=== 3.11 ===
804
* PHPUnit has been upgraded to 9.5 (see MDL-71036 for details).
805
  That comes with a few changes:
806
  - Breaking: All the changes that were deprecated with PHPUnit 8.5
807
    are now removed (see the 3.10 section below).
808
  - Breaking: assertContains() now performs stricter comparison (like assertSame()
809
    does). New assertContainsEquals() has been created to provide the old
810
    behavior.
811
  - Deprecation: A number of file-related assertions have been deprecated, will
812
    be removed with PHPUnit 10. Alternatives for all them have been created:
813
      - assertNotIsReadable()         -> assertIsNotReadable()
814
      - assertNotIsWritable()         -> assertIsNotWritable()
815
      - assertDirectoryNotExists()    -> assertDirectoryDoesNotExist()
816
      - assertDirectoryNotIsReadable()-> assertDirectoryIsNotReadable()
817
      - assertDirectoryNotIsWritable()-> assertDirectoryIsNotWritable()
818
      - assertFileNotExists()         -> assertFileDoesNotExist()
819
      - assertFileNotIsReadable()     -> assertFileIsNotReadable()
820
      - assertFileNotIsWritable()     -> assertFileIsNotWritable()
821
  - Deprecation: Regexp-related assertions have been deprecated, will be
822
    removed with PHPUnit 10. Alternatives for all them have been created:
823
      - assertRegExp()     -> assertMatchesRegularExpression()
824
      - assertNotRegExp()  -> assertDoesNotMatchRegularExpression()
825
  - Deprecation: The expectException() for Notice, Warning, Deprecation and
826
    Error is deprecated, will be removed with PHPUnit 10. New expectations
827
    have been created to better define the expectation:
828
      - expectDeprecation() for E_DEPRECATED and E_USER_DEPRECATED.
829
      - expectNotice() for E_NOTICE, E_USER_NOTICE, and E_STRICT.
830
      - expectWarning() for E_WARNING and E_USER_WARNING.
831
      - expectError() for everything else.
832
   - Deprecation: The Mock->at() matcher has been deprecated and will be
833
     removed with PHPUnit 10. Switch to better, more deterministic and clearer
834
     matchers is recommended (->once(), ->exactly(), ->never()...).
835
   - Deprecation: The Mock->setMethods() method has been *silently* deprecated
836
     and will be removed in the future. Change uses to the new Mock->onlyMethods()
837
     alternative. Also, it doesn't accept "null" anymore, new default must
838
     be [] (empty array).
839
   - Mostly internal: With the raise to PHP 7.3 as lower version supported,
840
     various internal bits perform now stricter type checking in params and
841
     return values. If your tests have own-created comparators, assertions...
842
     they may need to be adjusted.
843
   - Mostly internal: The phpunit.xml schema has changed, basically removing
844
     the old <filter> section and replacing it with a new, less confusing
845
     <coverage> section. Also the elements within them have been changed:
846
       - <whitelist> has been replaced by <include>.
847
       - <exclude> is not a child of <whitelist> anymore, but of <coverage>.
848
     Note that this only will affect if you've custom phpunit.xml files
849
     instead of using the automatically generated ones by Moodle.
850
   - Deprecation: Related to the previous point, the $whitelistxxx properties
851
     used by the coverage.php files have been deprecated (will continue
852
     working until Moodle 4.3) to follow the same pattern:
853
       - whitelistfolders -> includelistfolders
854
       - whitelistfiles   -> includelistfiles
855
   - Internal: Custom autoloaders are deprecated and will be removed with
856
     PHPUnit 10. Hence we have removed our one already.
857
     Note that it was not useful since PHPUnit 8.5, where the ability
858
     to run tests by class name was removed.
859
   - Warning: Because of some new restrictions about how test files and
860
     test classes must be named (that Moodle haven't followed ever) it's not
861
     possible to run individual test files any more. Use any of the alternative
862
     execution methods (filter, suite, config) to specify which tests
863
     you want to run. This will be hopefully fixed in MDL-71049
864
     once it has been agreed which the best way to proceed is.
865
* The horde library has been updated to version 5.2.23.
866
* New optional parameter $extracontent for print_collapsible_region_start(). This allows developers to add interactive HTML elements
867
  (e.g. a help icon) after the collapsible region's toggle link.
868
* Final deprecation i_dock_block() in behat_deprecated.php
869
* Final deprecation of get_courses_page. Function has been removed and core_course_category::get_courses() should be
870
  used instead.
871
* New encryption API in \core\encryption allows secure encryption and decryption of data. By
872
  default the key is stored in moodledata but admins can configure a different, more secure
873
  location in config.php if required. To get the best possible security for this feature, we
874
  recommend enabling the Sodium PHP extension.
875
  The OpenSSL alternative for this API, used when Sodium is not available, is considered deprecated
876
  at all effects, and will be removed in Moodle 4.2. See MDL-71421 for more information.
877
* Behat timeout constants behat_base::TIMEOUT, EXTENDED_TIMEOUT, and REDUCED_TIMEOUT, which were deprecated in 3.7, have been removed.
878
* \core_table\local\filter\filterset::JOINTYPE_DEFAULT is being changed from 1 (ANY) to 2 (ALL). Filterset implementations
879
  can override the default filterset join type by overriding \core_table\local\filter\filterset::get_join_type() instead.
880
* HTMLPurifier has been upgraded to the latest version - 4.13.0
881
* Markdown lib has been upgraded to the latest version - 1.9.0
882
* The minify lib has been upgraded to 1.3.63 and pathconvertor to 1.1.3
883
* A new optional parameter `$sort` has been added to all `$context->get_capabilities()` methods to be able to define order of
884
  returned capability array.
885
* Spout has been upgraded to the latest version - 3.1.0
886
* emoji-data has been upgraded to 6.0.0.
887
* The final deprecation of /message/defaultoutputs.php file and admin_page_defaultmessageoutputs.
888
  All their settings moved to admin/message.php (see MDL-64495). Please use admin_page_managemessageoutputs class instead.
889
* Behat now supports date selection from the date form element. Examples:
890
    - I set the field "<field_string>" to "##15 March 2021##"
891
    - I set the field "<field_string>" to "##first day of January last year##"
892
* Behat now supports date and time selection from the datetime form element. Examples:
893
    - I set the field "<field_string>" to "##15 March 2021 08:15##"
894
    - I set the field "<field_string>" to "##first day of January last year noon##"
895
* New DML driver method `$DB->sql_group_concat` for performing group concatenation of a field within a SQL query
896
* Added new class, AMD modules and WS that allow displaying forms in modal popups or load and submit in AJAX requests.
897
  See https://docs.moodle.org/dev/Modal_and_AJAX_forms for more details.
898
* New base class for defining an activity's custom completion requirements: \core_completion\activity_custom_completion.
899
  Activity module plugins that define custom completion conditions should implement a mod_[modname]\completion\custom_completion
900
  subclass and the following methods:
901
  - get_state(): Provides the completion state for a given custom completion rule.
902
  - get_defined_custom_rules(): Returns an array of the activity module's custom completion rules.
903
    e.g. ['completionsubmit']
904
  - get_custom_rule_descriptions(): Returns an associative array with values containing the user-facing textual description
905
    of the custom completion rules (which serve as the keys to these values).
906
    e.g. ['completionsubmit' => 'Must submit']
907
  - get_sort_order(): Returns an array listing the order the activity module's completion rules should be displayed to the user,
908
    including both custom completion and relevant core completion rules
909
    e.g. ['completionview', 'completionsubmit', 'completionusegrade']
910
* Admin setting admin_setting_configmulticheckbox now supports lazy-loading the options list by
911
  supplying a callback function instead of an array of options.
912
* A new core API class \core_user\fields provides ways to get lists of user fields, and SQL related to
913
  those fields. This replaces existing functions get_extra_user_fields(), get_extra_user_fields_sql(),
914
  get_user_field_name(), get_all_user_name_fields(), and user_picture::fields(), which have all been
915
  deprecated.
916
* Allow plugins to augment the curl security helper via callback. The plugin's function has to be defined as
917
  plugintype_pluginname_curl_security_helper in pluginname/lib.php file and the function should return a plugin's security
918
  helper instance.
919
* The behat transformation 'string time to timestamp' no longer supports datetime format. If provided, the format must
920
  be strftime compatible. Example:
921
    - I should see "##tomorrow noon##%A, %d %B %Y, %I:%M %p##"
922
* External functions implementation classes should use 'execute' as the method name, in which case the
923
  'methodname' property should not be specified in db/services.php file.
924
* The core_grades_create_gradecategory webservice has been deprecated in favour of core_grades_create_gradecategories, which is
925
  functionally identical but allows for parallel gradecategory creations by supplying a data array to the webservice.
926
* The signature of the get_context_name() function in the abstract class context and all extending classes (such as context_course)
927
  has been extended. The new parameter allows the to get the name without escaped characters.
928
* The signature of the question_category_options() has been extended. The new parameter allows the to get the categories name
929
  in the returned array without escaped characters.
930
* The \core\hub\site_registration_form::add_select_with_email() method has been deprecated in favour of
931
  \core\hub\site_registration_form::add_checkbox_with_email().
932
 
933
=== 3.10 ===
934
* PHPUnit has been upgraded to 8.5. That comes with a few changes:
935
  - Breaking change: All the "template methods" (setUp(), tearDown()...) now require to return void. This implies
936
    that the minimum version of PHP able to run tests will be PHP 7.1
937
  - A good number of assertions have been deprecated with this version
938
    and will be removed in a future one. In core all cases have been removed
939
    (so it's deprecation-warnings free). It's recommended to perform the
940
    switch to their new counterparts ASAP:
941
      - assertInternalType() has been deprecated. Use the assertIsXXX() methods instead.
942
      - assertArraySubset() has been deprecated. Use looping + assertArrayHasKey() or similar.
943
      - @expectedExceptionXXX annotations have been deprecated. Use the expectExceptionXXX()
944
        methods instead (and put them exactly before the line that is expected to throw the exception).
945
      - assertAttributeXXX() have been deprecated. If testing public attributes use normal assertions. If
946
        testing non-public attributes... you're doing something wrong :-)
947
      - assertContains() to find substrings on strings has been deprecated. Use assertStringContainsString() instead.
948
        (note that there are "IgnoringCase()" variants to perform case-insensitive matching.
949
      - assertEquals() extra params have been deprecated and new assertions for them created:
950
        - delta => use assertEqualsWithDelta()
951
        - canonicalize => use assertEqualsCanonicalizing()
952
        - ignoreCase => use assertEqualsIgnoringCase()
953
        - maxDepth => removed without replacement.
954
  - The custom printer that was used to show how to rerun a failure has been removed, it was old and "hacky"
955
    solution, for more information about how to run tests, see the docs, there are plenty of options.
956
  - phpunit/dbunit is not available any more and it has been replaced by a lightweight phpunit_dataset class, able to
957
    load XML/CSV and PHP arrays, send the to database and return rows to calling code (in tests). That implies the
958
    follwoing changes in the advanced_testcase class:
959
      - createFlatXMLDataSet() has been removed. No uses in core, uses can switch to createXMLDataSet() (read below).
960
      - createXMLDataSet() has been deprecated. Use dataset_from_files() instead.
961
      - createCsvDataSet() has been deprecated. Use dataset_from_files() instead.
962
      - createArrayDataSet() has been deprecated. This method was using the phpunit_ArrayDataSet class
963
        that has been also removed from core. Use dataset_from_array() instead.
964
      - loadDataSet() has been deprecated. Use phpunit_dataset->to_database() instead.
965
      - All the previous uses of phpunit/dbunit methods like Dataset:getRows(), Dataset::getRowCount()
966
        must be replaced by the new phpunit_dataset->get_rows() method.
967
* Retains the source course id when a course is copied from another course on the same site.
968
* Added function setScrollable in core/modal. This function can be used to set the modal's body to be scrollable or not
969
  when the modal's height exceeds the browser's height. This is also supported in core/modal_factory through the
970
  'scrollable' config parameter which can be set to either true or false. If not explicitly defined, the default value
971
  of 'scrollable' is true.
972
* The `$CFG->behat_retart_browser_after` configuration setting has been removed.
973
  The browser session is now restarted between all tests.
974
* add_to_log() has been through final deprecation, please rewrite your code to the new events API.
975
* The following functions have been finally deprecated and can not be used anymore:
976
  - print_textarea
977
  - calendar_get_all_allowed_types
978
  - groups_get_all_groups_for_courses
979
  - events_get_cached
980
  - events_uninstall
981
  - events_cleanup
982
  - events_dequeue
983
  - events_get_handlers
984
  - get_roles_on_exact_context
985
  - get_roles_with_assignment_on_context
986
  - message_add_contact
987
  - message_remove_contact
988
  - message_unblock_contact
989
  - message_block_contact
990
  - message_get_contact
991
  - get_legacy_logdata
992
  - set_legacy_logdata
993
  - get_legacy_eventname
994
  - get_legacy_eventdata
995
* The following renamed classes have been completely removed:
996
    - course_in_list (now: core_course_list_element)
997
    - coursecat (now: core_course_category)
998
* The form element 'htmleditor', which was deprecated in 3.6, has been removed.
999
* The `core_output_load_fontawesome_icon_map` web service has been deprecated and replaced by
1000
  `core_output_load_fontawesome_icon_system_map` which takes the name of the theme to generate the icon system map for.
1001
* A new parameter `$rolenamedisplay` has been added to `get_viewable_roles()` and `get_switchable_roles` to define how role names
1002
  should be returned.
1003
* The class coursecat_sortable_records has been removed.
1004
* Admin setting admin_setting_configselect now supports lazy-loading the options list by supplying
1005
  a callback function instead of an array of options.
1006
* Admin setting admin_setting_configselect now supports validating the selection by supplying a
1007
  callback function.
1008
* The task system has new functions adhoc_task_starting() and scheduled_task_starting() which must
1009
  be called before executing a task, and a new function \core\task\manager::get_running_tasks()
1010
  returns information about currently-running tasks.
1011
* New library function rename_to_unused_name() to rename a file within its current location.
1012
* Constant \core_h5p\file_storage::EDITOR_FILEAREA has been deprecated
1013
  because it's not required any more.
1014
* The ZipStream-PHP library has been added to Moodle core in /lib/zipstream.
1015
* The php-enum library has been added to Moodle core in /lib/php-enum.
1016
* The http-message library has been added to Moodle core in /lib/http-message.
1017
* Methods `filetypes_util::is_whitelisted()` and `filetypes_util::get_not_whitelisted()` have been deprecated and
1018
  renamed to `is_listed()` and `get_not_listed()` respectively.
1019
* Method `mustache_helper_collection::strip_blacklisted_helpers()` has been deprecated and renamed to
1020
  `strip_disallowed_helpers()`.
1021
* A new admin externalpage type `\core_admin\local\externalpage\accesscallback` for use in plugin settings is available that allows
1022
  a callback to be provided to determine whether page can be accessed.
1023
* New setting $CFG->localrequestdir overrides which defaults to sys_get_temp_dir()
1024
* Function redirect() now emits a line of backtrace into the X-Redirect-By header when debugging is on
1025
* New DML function $DB->delete_records_subquery() to delete records based on a subquery in a way
1026
  that will work across databases.
1027
* Add support for email DKIM signatures via $CFG->emaildkimselector
1028
 
1029
=== 3.9 ===
1030
* Following function has been deprecated, please use \core\task\manager::run_from_cli().
1031
    - cron_run_single_task()
1032
* Following class has been deprecated, please use \core\task\manager.
1033
    - \tool_task\run_from_cli
1034
* Following CLI scripts has been deprecated:
1035
  - admin/tool/task/cli/schedule_task.php please use admin/cli/scheduled_task.php
1036
  - admin/tool/task/cli/adhoc_task.php please use admin/cli/adhoc_task.php
1037
* Old Safe Exam Browser quiz access rule (quizaccess_safebrowser) replaced by new Safe Exam Browser access rule (quizaccess_seb).
1038
  Experimental setting enablesafebrowserintegration was deleted.
1039
* New CFPropertyList library has been added to Moodle core in /lib/plist.
1040
* behat_data_generators::the_following_exist() has been removed, please use
1041
  behat_data_generators::the_following_entities_exist() instead. See MDL-67691 for more info.
1042
* admin/tool/task/cli/adhoc_task.php now observers the concurrency limits.
1043
  If you want to get the previous (unlimited) behavior, use the --ignorelimits switch).
1044
* Removed the following deprecated functions:
1045
  - question_add_tops
1046
  - question_is_only_toplevel_category_in_context
1047
* format_float() now accepts a special value (-1) as the $decimalpoints parameter
1048
  which means auto-detecting number of decimal points.
1049
* plagiarism_save_form_elements() has been deprecated. Please use {plugin name}_coursemodule_edit_post_actions() instead.
1050
* plagiarism_get_form_elements_module() has been deprecated. Please use {plugin name}_coursemodule_standard_elements() instead.
1051
* Changed default sessiontimeout to 8 hours to cover most normal working days
1052
* Plugins can now explicitly declare supported and incompatible Moodle versions in version.php
1053
  - $plugin->supported = [37,39];
1054
    supported takes an array of ascending numbers, that correspond to a range of branch numbers of supported versions, inclusive.
1055
    Moodle versions that are outside of this range will produce a message notifying at install time, but will allow for installation.
1056
  - $plugin->incompatible = 36;
1057
    incompatible takes a single int corresponding to the first incompatible branch. Any Moodle versions including and
1058
    above this will be prevented from installing the plugin, and a message will be given when attempting installation.
1059
* Added the <component>_bulk_user_actions() callback which returns a list of custom action_links objects
1060
* Add 'required' admin flag for mod forms allows elements to be toggled between being required or not in admin settings.
1061
  - In mod settings, along with lock, advanced flags, the required flag can now be set with $setting->set_required_flag_options().
1062
    The name of the admin setting must be exactly the same as the mod_form element.
1063
  - Currently supported by:
1064
    - mod_assign
1065
    - mod_quiz
1066
* Added a native MySQL / MariaDB lock implementation
1067
* The database drivers (moodle_database and subclasses) don't need to implement get_columns() anymore.
1068
  They have to implement fetch_columns instead.
1069
* Added function cleanup_after_drop to the database_manager class to take care of all the cleanups that need to be done after a table is dropped.
1070
* The 'xxxx_check_password_policy' callback now only fires if $CFG->passwordpolicy is true
1071
* grade_item::update_final_grade() can now take an optional parameter to set the grade->timemodified. If not present the current time will carry on being used.
1072
* lib/outputrequirementslib::get_jsrev now is public, it can be called from other classes.
1073
* H5P libraries have been moved from /lib/h5p to h5p/h5plib as an h5plib plugintype.
1074
* mdn-polyfills has been renamed to polyfills. The reason there is no polyfill from the MDN is
1075
  because there is no example polyfills on the MDN for this functionality.
1076
* AJAX pages can be called without requiring a session lock if they set READ_ONLY_SESSION to true, eg.
1077
  define('READ_ONLY_SESSION', true); Note - this also requires $CFG->enable_read_only_sessions to be set to true.
1078
* External functions can be called without requiring a session lock if they define 'readonlysession' => true in
1079
  db/services.php. Note - this also requires $CFG->enable_read_only_sessions to be set to true.
1080
* database_manager::check_database_schema() now checks for missing and extra indexes.
1081
* Implement a more direct xsendfile_file() method for an alternative_file_system_class
1082
* A new `dynamic` table interface has been defined, which allows any `flexible_table` to be converted into a table which
1083
  is updatable via ajax calls. See MDL-68495 and `\core_table\dynamic` for further information.
1084
* The core/notification module has been updated to use AMD modals for its confirmation and alert dialogues.
1085
  The confirmation dialogue no longer has a configurable "No" button as per similar changes in MDL-59759.
1086
  This set of confirmation modals was unintentionally missed from that deprecation process.
1087
* The download_as_dataformat() method has been deprecated. Please use \core\dataformat::download_data() instead
1088
* The following functions have been updated to support passing in an array of group IDs (but still support passing in a single ID):
1089
  * groups_get_members_join()
1090
  * groups_get_members_ids_sql()
1091
* Additional parameters were added to core_get_user_dates:
1092
    - type: specifies the calendar type. Optional, defaults to Gregorian.
1093
    - fixday: Whether to remove leading zero for day. Optional, defaults to 1.
1094
    - fixhour: Whether to remove leading zero for hour. Optional, defaults to 1.
1095
* Legacy cron has been deprecated and will be removed in Moodle 4.1. This includes the functions:
1096
  - cron_execute_plugin_type()
1097
  - cron_bc_hack_plugin_functions()
1098
  Please, use the Task API instead: https://moodledev.io/docs/apis/subsystems/task
1099
* Introduce new hooks for plugin developers:
1100
    - <component>_can_course_category_delete($category)
1101
    - <component>_can_course_category_delete_move($category, $newcategory)
1102
  These hooks allow plugin developers greater control over category deletion. Plugin can return false in those
1103
  functions if category deletion or deletion with content move to the new parent category is not permitted.
1104
  Both $category and $newcategory params are instances of core_course_category class.
1105
    - <component>_pre_course_category_delete_move($category, $newcategory)
1106
  This hook is expanding functionality of existing <component>_pre_course_category_delete hook and allow plugin developers
1107
  to execute code prior to category deletion when its content is moved to another category.
1108
  Both $category and $newcategory params are instances of core_course_category class.
1109
    - <component>_get_course_category_contents($category)
1110
  This hook allow plugin developers to add information that is displayed on category deletion form. Function should
1111
  return string, which will be added to the list of category contents shown on the form. $category param is an instance
1112
  of core_course_category class.
1113
* Data generator create_user in both unittests and behat now validates user fields and triggers user_created event
1114
 
1115
=== 3.8 ===
1116
* Add CLI option to notify all cron tasks to stop: admin/cli/cron.php --stop
1117
* The rotate_image function has been added to the stored_file class (MDL-63349)
1118
* The yui checknet module is removed. Call \core\session\manager::keepalive instead.
1119
* The generate_uuid() function has been deprecated. Please use \core\uuid::generate() instead.
1120
* Remove lib/pear/auth/RADIUS.php (MDL-65746)
1121
* Core components are now defined in /lib/components.json instead of coded into /lib/classes/component.php
1122
* Subplugins should now be defined using /db/subplugins.json instead of /db/subplugins.php
1123
* The following functions have been finally deprecated and can not be used anymore:
1124
    * allow_override()
1125
    * allow_assign()
1126
    * allow_switch()
1127
    * https_required()
1128
    * verify_https_required()
1129
* Remove duplicate font-awesome SCSS, Please see /theme/boost/scss/fontawesome for usage (MDL-65936)
1130
* Remove lib/pear/Crypt/CHAP.php (MDL-65747)
1131
* New output component available: \core\output\checkbox_toggleall
1132
  - This allows developers to easily output groups of checkboxes that can be toggled by master controls in the form of a checkbox or
1133
    a button. Action elements which perform actions on the selected checkboxes can also be enabled/disabled depending on whether
1134
    at least a single checkbox item is selected or not.
1135
* Final deprecation (removal) of the core/modal_confirm dialogue.
1136
* Upgrade scssphp to v1.0.2, This involves renaming classes from Leafo => ScssPhp as the repo has changed.
1137
* Implement supports_xsendfile() method and allow support for xsendfile in alternative_file_system_class
1138
  independently of local files (MDL-66304).
1139
* The methods get_local_path_from_storedfile and get_remote_path_from_storedfile in lib/filestore/file_system.php
1140
  are now public. If you are overriding these then you will need to change your methods to public in your class.
1141
* It is now possible to use sub-directories for AMD modules.
1142
  The standard rules for Level 2 namespaces also apply to AMD modules.
1143
  The sub-directory used must be either an valid component, or placed inside a 'local' directory to ensure that it does not conflict with other components.
1144
 
1145
    The following are all valid module names and locations in your plugin:
1146
      mod_forum/view: mod/forum/amd/src/view.js
1147
      mod_forum/local/views/post: mod/forum/amd/src/local/views/post
1148
      mod_forum/form/checkbox-toggle: mod/forum/amd/src/form/checkbox-toggle.js
1149
 
1150
    The following are all invalid module names and locations in your plugin:
1151
      mod_forum/views/post: mod/forum/amd/src/views/post
1152
* The 'xxxx_check_password_policy' method now has an extra parameter: $user. It contains the user object to perform password
1153
validation against and defaults to null (so, no user needed) if not provided.
1154
* It is now possible to use sub-directories when creating mustache templates.
1155
  The standard rules for Level 2 namespaces also apply to templates.
1156
  The sub-directory used must be either an valid component, or placed inside a 'local' directory to ensure that it does not conflict with other components.
1157
 
1158
    The following are all valid template names and locations in your plugin:
1159
      mod_forum/forum_post: mod/forum/templates/forum_post.mustache
1160
      mod_forum/local/post/user: mod/forum/templates/local/post/user.mustache
1161
      mod_forum/form/checkbox_toggle: mod/forum/templates/form/checkbox_toggle.mustache
1162
 
1163
    The following are _invalid_ template names and locations:
1164
      mod_forum/post/user: mod/forum/templates/local/post/user.mustache
1165
* Following behat steps have been removed from core:
1166
    - I go to "<gradepath_string>" in the course gradebook
1167
* A new admin setting widget 'core_admin\local\settings\filesize' is added.
1168
* Core capabilities 'moodle/community:add' and 'moodle/community:download' have been removed from core as part of Moodle.net sunsetting.
1169
* As part of Moodle.net sunsetting process the following hub api functions have been deprecated:
1170
    - get_courses
1171
    - unregister_courses
1172
    - register_course
1173
    - add_screenshot
1174
    - download_course_backup
1175
    - upload_course_backup
1176
* A new setting 'Cache templates' was added (see MDL-66367). This setting determines if templates are cached or not.
1177
  This setting can be set via the UI or by defining $CFG->cachetemplates in your config.php file. It is a boolean
1178
  and should be set to either false or true. Developers will probably want to set this to false.
1179
* The core_enrol_edit_user_enrolment webservice has been deprecated. Please use core_enrol_submit_user_enrolment_form instead.
1180
* \single_button constructor has a new attributes param to add attributes to the button HTML tag.
1181
* Improved url matching behaviour for profiled urls and excluded urls
1182
* Attempting to use xsendfile via the 3rd param of readstring_accel() is now ignored.
1183
* New H5P libraries have been added to Moodle core in /lib/h5p.
1184
* New H5P core subsystem have been added.
1185
* Introduced new callback for plugin developers '<component>_get_path_from_pluginfile($filearea, $args)': This will return
1186
the itemid and filepath for the filearea and path defined in $args. It has been added in order to get the correct itemid and
1187
filepath because some components, such as mod_page or mod_resource, add the revision to the URL where the itemid should be placed
1188
(to prevent caching problems), but then they don't store it in database.
1189
* New utility function \core_form\util::form_download_complete should be called if your code sends
1190
  a file with Content-Disposition: Attachment in response to a Moodle form submit button (to ensure
1191
  that disabled submit buttons get re-enabled in that case). It is automatically called by the
1192
  filelib.php send_xx functions.
1193
* If you have a form which sends a file in response to a Moodle form submit button, but you cannot
1194
  call the above function because the file is sent by a third party library, then you should add
1195
  the attribute data-double-submit-protection="off" to your form.
1196
 
1197
=== 3.7 ===
1198
 
1199
* Nodes in the navigation api can have labels for each group. See set/get_collectionlabel().
1200
* The method core_user::is_real_user() now returns false for userid = 0 parameter
1201
* 'mform1' dependencies (in themes, js...) will stop working because a randomly generated string has been added to the id
1202
attribute on forms to avoid collisions in forms loaded in AJAX requests.
1203
* A new method to allow queueing or rescheduling of an existing scheduled task was added. This allows an existing task
1204
  to be updated or queued as required. This new functionality can be found in \core\task\manager::reschedule_or_queue_adhoc_task.
1205
* Icons are displayed for screen readers unless they have empty alt text (aria-hidden). Do not provide an icon with alt text immediately beside an element with exactly the same text.
1206
* admin_settingpage has a new function hide_if(), modeled after the same functionality in the forms library. This allows admin settings to be dynamically hidden based on the values of other settings.
1207
* The \core_rating provider's get_sql_join function now accepts an optional $innerjoin parameter.
1208
  It is recommended that privacy providers using this function call rewrite any long query into a number of separate
1209
  calls to add_from_sql for improved performance, and that the new argument is used.
1210
  This will allow queries to remain backwards-compatible with older versions of Moodle but will have significantly better performance in version supporting the innerjoin parameter.
1211
* /message/defaultoutputs.php file and admin_page_defaultmessageoutputs class have been deprecated
1212
  and all their settings moved to admin/message.php (see MDL-64495). Please use admin_page_managemessageoutputs class instead.
1213
* A new parameter $lang has been added to mustache_template_source_loader->load_with_dependencies() method
1214
  so it is possible for Mustache to request string in a specific language.
1215
* Behat timeout constants behat_base::TIMEOUT, EXTENDED_TIMEOUT, and REDUCED_TIMEOUT have been
1216
  deprecated. Please instead use the functions behat_base::get_timeout(), get_extended_timeout(),
1217
  and get_reduced_timeout(). These allow for timeouts to be increased by a setting in config.php.
1218
* The $draftitemid parameter of file_save_draft_area_files() function now supports the constant IGNORE_FILE_MERGE:
1219
  When the parameter is set to that constant, the function won't process file merging, keeping the original state of the file area.
1220
  Notice also than when $text is set, pluginfile rewrite won't be processed so the text will not be modified.
1221
* Introduced new callback for plugin developers '<component>_pre_processor_message_send($procname, $proceventdata)':
1222
  This will allow any plugin to manipulate messages or notifications before they are sent by a processor (email, mobile...)
1223
* New capability 'moodle/category:viewcourselist' in category context that controls whether user is able to browse list of courses
1224
  in this category. To work with list of courses use API methods in core_course_category and also 'course' form element.
1225
* It is possible to pass additional conditions to get_courses_search();
1226
  core_course_category::search_courses() now allows to search only among courses with completion enabled.
1227
* Add support for a new xxx_after_require_login callback
1228
* A new conversation type has been created for self-conversations. During the upgrading process:
1229
  - Firstly, the existing self-conversations will be starred and migrated to the new type, removing the duplicated members in the
1230
  message_conversation_members table.
1231
  - Secondly, the legacy self conversations will be migrated from the legacy 'message_read' table. They will be created using the
1232
  new conversation type and will be favourited.
1233
  - Finally, the self-conversations for all remaining users without them will be created and starred.
1234
Besides, from now, a self-conversation will be created and starred by default to all the new users (even when $CFG->messaging
1235
is disabled).
1236
* New optional parameter $throwexception for \get_complete_user_data(). If true, an exception will be thrown when there's no
1237
  matching record found or when there are multiple records found for the given field value. If false, it will simply return false.
1238
  Defaults to false when not set.
1239
* Exposed submit button to allow custom styling (via customclassoverride variable) which can override btn-primary/btn-secondary classes
1240
* `$includetoken` parameter type has been changed. Now supports:
1241
   boolean: False indicates to not include the token, true indicates to generate a token for the current user ($USER).
1242
   integer: Indicates to generate a token for the user whose id is the integer value.
1243
* The following functions have been updated to support the new usage:
1244
    - make_pluginfile_url
1245
    - file_rewrite_pluginfile_urls
1246
* New mform element 'float' handles localised floating point numbers.
1247
 
1248
=== 3.6 ===
1249
 
1250
* A new token-based version of pluginfile.php has been added which can be used for out-of-session file serving by
1251
  setting the `$includetoken` parameter to true on the `moodle_url::make_pluginfile_url()`, and
1252
  `moodle_url::make_file_url()` functions.
1253
* The following picture functions have been updated to support use of the new token-based file serving:
1254
    - print_group_picture
1255
    - get_group_picture_url
1256
* The `user_picture` class has a new public `$includetoken` property which can be set to make use of the new token-based
1257
  file serving.
1258
* Custom AJAX handlers for the form autocomplete fields can now optionally return string in their processResults()
1259
  callback. If a string is returned, it is displayed instead of the list of suggested items. This can be used, for
1260
  example, to inform the user that there are too many items matching the current search criteria.
1261
* The form element 'htmleditor' has been deprecated. Please use the 'editor' element instead.
1262
* The print_textarea() function has been deprecated. Please use $OUTPUT->print_textarea() instead.
1263
* The following functions have been finally deprecated and can not be used any more:
1264
    - external_function_info()
1265
    - core_renderer::update_module_button()
1266
    - events_trigger()
1267
    - events_cron()
1268
    - events_dispatch()
1269
    - events_is_registered()
1270
    - events_load_def()
1271
    - events_pending_count()
1272
    - events_process_queued_handler()
1273
    - events_queue_handler()
1274
    - events_trigger_legacy()
1275
    - events_update_definition()
1276
    - get_file_url()
1277
    - course_get_cm_rename_action()
1278
    - course_scale_used()
1279
    - site_scale_used()
1280
    - clam_message_admins()
1281
    - get_clam_error_code()
1282
    - get_records_csv()
1283
    - put_records_csv()
1284
    - print_log()
1285
    - print_mnet_log()
1286
    - print_log_csv()
1287
    - print_log_xls()
1288
    - print_log_ods()
1289
    - build_logs_array()
1290
    - get_logs_usercourse()
1291
    - get_logs_userday()
1292
    - get_logs()
1293
    - prevent_form_autofill_password()
1294
    - prefixed_tablenode_transformations()
1295
    - core_media_renderer
1296
    - core_media
1297
* Following api's have been removed in behat_config_manager, please use behat_config_util instead.
1298
    - get_features_with_tags()
1299
    - get_components_steps_definitions()
1300
    - get_config_file_contents()
1301
    - merge_behat_config()
1302
    - get_behat_profile()
1303
    - profile_guided_allocate()
1304
    - merge_config()
1305
    - clean_path()
1306
    - get_behat_tests_path()
1307
* Following behat steps have been removed from core:
1308
    - I set the field "<field_string>" to multiline
1309
    - I follow "<link_string>"" in the open menu
1310
* The following behat steps have been deprecated, please do not use these step definitions any more:
1311
    - behat_navigation.php: i_navigate_to_node_in()
1312
    - theme/boost/tests/behat/behat_theme_boost_behat_navigation.php: i_navigate_to_node_in()
1313
  Use one of the following steps instead:
1314
    - I navigate to "PATH > ITEM" in current page administration
1315
    - I navigate to "PATH > ITEM" in site administration
1316
    - I navigate to course participants
1317
    - I navigate to "TAB1 > TAB2" in the course gradebook
1318
  If some items are not available without Navigation block at all, one can use combination of:
1319
    - I add the "Navigation" block if not present
1320
    - I click on "LINK" "link" in the "Navigation" "block"
1321
* The core\session\util class has been removed. This contained one function only used by the memcached class which has
1322
  been moved there instead (connection_string_to_memcache_servers).
1323
* Removed the lib/password_compat/lib/password.php file.
1324
* The eventslib.php file has been deleted and its functions have been moved to deprecatedlib.php. The affected functions are:
1325
  - events_get_cached()
1326
  - events_uninstall()
1327
  - events_cleanup()
1328
  - events_dequeue()
1329
  - events_get_handlers()
1330
* coursecat::get() now has optional $user parameter.
1331
* coursecat::is_uservisible() now has optional $user parameter.
1332
* Removed the lib/form/submitlink.php element which was deprecated in 3.2.
1333
* The user_selector classes do not support custom list of extra identity fields any more. They obey the configured user
1334
  policy and respect the privacy setting made by site administrators. The list of user identifiers should never be
1335
  hard-coded. Instead, the setting $CFG->showuseridentity should be always respected, which has always been the default
1336
  behaviour (MDL-59847).
1337
* The function message_send() in messagelib.php will now only take the object \core\message\message as a parameter.
1338
* The method message_sent::create_from_ids() parameter courseid is now required. A debugging
1339
  message was previously displayed, and the SITEID was used, when not provided.
1340
* The method \core\message\manager::send_message() now only takes the object \core\message\message as the first parameter.
1341
* Following functions have been deprecated, please use get_roles_used_in_context.
1342
    - get_roles_on_exact_context()
1343
    - get_roles_with_assignment_on_context()
1344
* New functions to support the merging of user draft areas from the interface; see MDL-45170 for details:
1345
  - file_copy_file_to_file_area()
1346
  - file_merge_draft_areas()
1347
  - file_replace_file_area_in_text()
1348
  - extract_draft_file_urls_from_text()
1349
* Class coursecat is now alias to autoloaded class core_course_category, course_in_list is an alias to
1350
  core_course_list_element, class coursecat_sortable_records is deprecated without replacement.
1351
* \core_user_external::create_users() and \core_user_external::update_users() can now accept more user profile fields so user
1352
  creation/update via web service can now be very similar to the edit profile page's functionality. The new fields that have been
1353
  added are:
1354
  - maildisplay
1355
  - interests
1356
  - url
1357
  - icq
1358
  - skype
1359
  - aim
1360
  - yahoo
1361
  - msn
1362
  - institution
1363
  - department
1364
  - phone1
1365
  - phone2
1366
  - address
1367
* New function mark_user_dirty() must be called after changing data that gets cached in user sessions. Examples:
1368
  - Assigning roles to users.
1369
  - Unassigning roles from users.
1370
  - Enrolling users into courses.
1371
  - Unenrolling users from courses.
1372
* New optional parameter $context for the groups_get_members_join() function and ability to filter users that are not members of
1373
any group. Besides, groups_get_members_ids_sql, get_enrolled_sql and get_enrolled_users now accepts -1 (USERSWITHOUTGROUP) for
1374
the groupid field.
1375
* Added $CFG->conversionattemptlimit setting to config.php allowing a maximum number of retries before giving up conversion
1376
  of a given document by the assignfeedback_editpdf\task\convert_submissions task. Default value: 3.
1377
* The following events have been deprecated and should not be used any more:
1378
  - message_contact_blocked
1379
  - message_contact_unblocked
1380
  The reason for this is because you can now block/unblock users without them necessarily being a contact. These events
1381
  have been replaced with message_user_blocked and message_user_unblocked respectively.
1382
* The event message_deleted has been changed, it no longer records the value of the 'useridto' due to
1383
  the introduction of group messaging. Please, if you have any observers or are triggering this event
1384
  in your code you will have to make some changes!
1385
* The gradebook now supports the ability to accept files as feedback. This can be achieved by adding
1386
  'feedbackfiles' to the $grades parameter passed to grade_update().
1387
    For example -
1388
        $grades['feedbackfiles'] = [
1389
            'contextid' => 1,
1390
            'component' => 'mod_xyz',
1391
            'filearea' => 'mod_xyz_feedback',
1392
            'itemid' => 2
1393
        ];
1394
  These files will be then copied to the gradebook file area.
1395
* Allow users to choose who can message them for privacy reasons, with a 'growing circle of contactability':
1396
  - Added $CFG->messagingallusers, for enabling messaging to all site users. Default value: 0.
1397
    When $CFG->messagingallusers = false users can choose being contacted by only contacts or contacts and users sharing a course with them.
1398
    In that case, the default user preference is MESSAGE_PRIVACY_COURSEMEMBER (users sharing a course).
1399
    When $CFG->messagingallusers = true users have a new option for the privacy messaging preferences: "Anyone on the site". In that case,
1400
    the default user preference is MESSAGE_PRIVACY_SITE (all site users).
1401
  - Added $CFG->keepmessagingallusersenabled setting to config.php to force enabling $CFG->messagingallusers during the upgrading process.
1402
    Default value: 0.
1403
    When $CFG->keepmessagingallusersenabled is set to true, $CFG->messagingallusers will be also set to true to enable messaging site users.
1404
    However, when it is empty, $CFG->messagingallusers will be disabled during the upgrading process, so the users will only be able to
1405
    message contacts and users sharing a course with them.
1406
* There has been interface and functional changes to admin_apply_default_settings() (/lib/adminlib.php).  The function now takes two
1407
  additional optional parameters, $admindefaultsettings and $settingsoutput.  It also has a return value $settingsoutput.
1408
  The function now does not need to be called twice to ensure all default settings are set.  Instead the function calls itself recursively
1409
  until all settings have been set. The additional parameters are used recursively and shouldn't be need to be explicitly passed in when calling
1410
  the function from other parts of Moodle.
1411
  The return value: $settingsoutput is an array of setting names and the values that were set by the function.
1412
* Webservices no longer update the lastaccess time for a user in a course. Call core_course_view_course() manually if needed.
1413
* A new field has been added to the context table. Please ensure that any contxt preloading uses get_preload_record_columns_sql or get_preload_record_columns to fetch the list of columns.
1414
 
1415
=== 3.5 ===
1416
 
1417
* There is a new privacy API that every subsystem and plugin has to implement so that the site can become GDPR
1418
  compliant. Plugins use this API to report what information they store or process regarding users, and provide ability
1419
  to export and delete personal data. See https://moodledev.io/docs/apis/subsystems/privacy for guidelines on how to implement the
1420
  privacy API in your plugin.
1421
* The cron runner now sets up a fresh PAGE and OUTPUT between each task.
1422
* The core_renderer methods notify_problem(), notify_success(), notify_message() and notify_redirect() that were
1423
  deprecated in Moodle 3.1 have been removed. Use \core\notification::add(), or \core\output\notification as required.
1424
* The maximum supported precision (the total number of digits) for XMLDB_TYPE_NUMBER ("number") fields raised from 20 to
1425
  38 digits. Additionally, the whole number part (precision minus scale) must not be longer than the maximum length of
1426
  integer fields (20 digits). Note that PHP floats commonly support precision of roughly 15 digits only (MDL-32113).
1427
* Event triggering and event handlers:
1428
    - The following events, deprecated since moodle 2.6, have been finally removed: groups_members_removed,
1429
      groups_groupings_groups_removed, groups_groups_deleted, groups_groupings_deleted.
1430
* The following functions have been finally deprecated and can not be used any more:
1431
  - notify()
1432
* XMLDB now validates the PATH attribute on every install.xml file. Both the XMLDB editor and installation will fail
1433
  when a problem is detected with it. Please ensure your plugins contain correct directory relative paths.
1434
* Add recaptchalib_v2.php for support of reCAPTCHA v2.
1435
* Plugins can define class 'PLUGINNAME\privacy\local\sitepolicy\handler' if they implement an alternative mechanisms for
1436
  site policies managements and agreements. Administrators can define which component is to be used for handling site
1437
  policies and agreements.
1438
* Scripts can define a constant NO_SITEPOLICY_CHECK and set it to true before requiring the main config.php file. It
1439
  will make the require_login() skipping the test for the user's policyagreed status. This is useful for plugins that
1440
  act as a site policy handler.
1441
* There is a new is_fulltext_search_supported() DML function. The default implementation returns false. This function
1442
  is used by 'Simple search' global search engine to determine if the database full-text search capabilities can be used.
1443
* The following have been removed from the list of core subsystems:
1444
   - core_register
1445
   - core_publish
1446
  Following this change, \core_register_renderer and \core_publish_renderer have been removed and their methods have been
1447
  moved to \core_admin_renderer and \core_course_renderer respectively.
1448
 
1449
=== 3.4 ===
1450
 
1451
* oauth2_client::request method has an extra parameter to specify the accept header for the response (MDL-60733)
1452
* The following functions, previously used (exclusively) by upgrade steps are not available
1453
  anymore because of the upgrade cleanup performed for this version. See MDL-57432 for more info:
1454
    - upgrade_mimetypes()
1455
    - upgrade_fix_missing_root_folders_draft()
1456
    - upgrade_minmaxgrade()
1457
    - upgrade_course_tags()
1458
 
1459
* Added new moodleform element 'filetypes' and new admin setting widget 'admin_setting_filetypes'. These new widgets
1460
  allow users to define a list of file types; either by typing them manually or selecting them from a list. The widgets
1461
  directly support the syntax used to feed the 'accepted_types' option of the filemanager and filepicker elements. File
1462
  types can be specified as extensions (.jpg or just jpg), mime types (text/plain) or groups (image).
1463
* Removed accesslib private functions: load_course_context(), load_role_access_by_context(), dedupe_user_access() (MDL-49398).
1464
* Internal "accessdata" structure format has changed to improve ability to perform role definition caching (MDL-49398).
1465
* Role definitions are no longer cached in user session (MDL-49398).
1466
* External function core_group_external::get_activity_allowed_groups now returns an additional field: canaccessallgroups.
1467
  It indicates whether the user will be able to access all the activity groups.
1468
* file_get_draft_area_info does not sum the root folder anymore when calculating the foldercount.
1469
* The moodleform element classes can now optionally provide a public function validateSubmitValue(). This method can be
1470
  used to perform implicit validation of submitted values - without the need to explicitly add the validation rules to
1471
  every form. The method should accept a single parameter with the submitted value. It should return a string with the
1472
  eventual validation error, or an empty value if the validation passes.
1473
* New user_picture attribute $includefullname to determine whether to include the user's full name with the user's picture.
1474
* Enrol plugins which provide enrolment actions can now declare the following "data-action" attributes in their implementation of
1475
  enrol_plugin::get_user_enrolment_actions() whenever applicable:
1476
  * "editenrolment" - For editing a user'e enrolment details. Defined by constant ENROL_ACTION_EDIT.
1477
  * "unenrol" - For unenrolling a student. Defined by constant ENROL_ACTION_UNENROL.
1478
  These attributes enable enrol actions to be rendered via modals. If not added, clicking on the enrolment action buttons will still
1479
  redirect the user to the appropriate enrolment action page. Though optional, it is recommended to add these attributes for a
1480
  better user experience when performing enrol actions.
1481
* The enrol_plugin::get_user_enrolment_actions() implementations for core enrol plugins have been removed and moved to
1482
  the parent method itself. New enrol plugins don't have to implement get_user_enrolment_actions(), but just need to
1483
  make sure that they override:
1484
  - enrol_plugin::allow_manage(), and/or
1485
  - enrol_plugin::allow_unenrol_user() or enrol_plugin::allow_unenrol()
1486
  Existing enrol plugins that override enrol_plugin::get_user_enrolment_actions() don't have to do anything, but can
1487
  also opt to remove their own implementation of the method if they basically have the same logic as the parent method.
1488
* New optional parameter $enrolid for the following functions:
1489
  - get_enrolled_join()
1490
  - get_enrolled_sql()
1491
  - get_enrolled_with_capabilities_join()
1492
  Setting this parameter to a non-zero value will add a condition to the query such that only users that were enrolled
1493
  with this enrolment method will be returned.
1494
* New optional parameter 'closeSuggestionsOnSelect' for the enhance() function for form-autocomplete. Setting this to true will
1495
  close the suggestions popup immediately after an option has been selected. If not specified, it defaults to true for single-select
1496
  elements and false for multiple-select elements.
1497
* user_can_view_profile() now also checks the moodle/user:viewalldetails capability.
1498
* The core/modal_confirm dialogue has been deprecated. Please use the core/modal_save_cancel dialogue instead. Please ensure you
1499
  update to use the ModalEvents.save and ModalEvents.cancel events instead of their yes/no counterparts.
1500
* Instead of checking the 'moodle/course:viewparticipants' and 'moodle/site:viewparticipants' capabilities use the
1501
  new functions course_can_view_participants() and course_require_view_participants().
1502
* $stored_file->add_to_curl_request() now adds the filename to the curl request.
1503
* The option for Login HTTPS (authentication-only SSL) has been removed
1504
* $CFG->loginhttps is now deprecated, do not use it.
1505
* $PAGE->https_required and $PAGE->verify_https_required() are now deprecated. They are no longer used and will throw a coding_exception.
1506
* $CFG->httpswwwroot is now deprecated and will always result in the same value as wwwroot.
1507
* Added function core_role_set_view_allowed() to check if a user should be able to see a given role.
1508
  This should be checked whenever displaying a list of roles to a user, however, core_role_set_assign_allowed may need to override it
1509
  in some cases.
1510
* Deprecated allow_override, allow_assign and allow_switch and replaced with core_role_set_*_allowed to avoid function names conflicting.
1511
 
1512
=== 3.3.1 ===
1513
 
1514
* ldap_get_entries_moodle() now always returns lower-cased attribute names in the returned entries.
1515
  It was suppposed to do so before, but it actually didn't.
1516
 
1517
=== 3.3 ===
1518
 
1519
* Behat compatibility changes are now being documented at https://moodledev.io
1520
* PHPUnit's bootstrap has been changed to use HTTPS wwwroot (https://www.example.com/moodle) from previous HTTP version. Any
1521
  existing test expecting the old HTTP URLs will need to be switched to the new HTTPS value (reference: MDL-54901).
1522
* The information returned by the idp list has changed. This is usually only rendered by the login page and login block.
1523
  The icon attribute is removed and an iconurl attribute has been added.
1524
* Support added for a new type of external file: FILE_CONTROLLED_LINK. This is an external file that Moodle can control
1525
  the permissions. Moodle makes files read-only but can grant temporary write access.
1526
    When accessing a URL, the info from file_browser::get_file_info will be checked to determine if the user has write access,
1527
    if they do - the remote file will have access controls set to allow editing.
1528
* The method moodleform::after_definition() has been added and can now be used to add some logic
1529
  to be performed after the form's definition was set. This is useful for intermediate subclasses.
1530
* Moodle has support for font-awesome icons. Plugins should use the xxx_get_fontawesome_icon_map callback
1531
  to map their custom icons to one from font-awesome.
1532
* $OUTPUT->pix_url() has been deprecated because it is was used mostly to manually generate image tags for icons.
1533
  We now distinguish between icons and "small images". The difference is that an icon does not have to be rendered as an image tag
1534
  with a source. It is OK to still have "small images" - if this desired use $OUTPUT->image_icon() and $OUTPUT->image_url(). For
1535
  other uses - use $OUTPUT->pix_icon() or the pix helper in mustache templates {{#pix}}...{{/pix}}
1536
  For other valid use cases use $OUTPUT->image_url().
1537
* Activity icons have been split from standard icons. Use $OUTPUT->image_icon instead of $OUTPUT->pix_icon for these
1538
  type of icons (the coloured main icon for each activity).
1539
* YUI module moodle-core-formautosubmit has been removed, use jquery .change() instead (see lib/templates/url_select.mustache for
1540
  an example)
1541
* $mform->init_javascript_enhancement() is deprecated and no longer does anything. Existing uses of smartselect enhancement
1542
  should be switched to the searchableselector form element or other solutions.
1543
* Return value of the validate_email() is now proper boolean as documented. Previously the function could return 1, 0 or false.
1544
* The mcore YUI rollup which included various YUI modules such as moodle-core-notification is no longer included on every
1545
  page. Missing YUI depdencies may be exposed by this change (e.g. missing a requirement on moodle-core-notification when
1546
  using M.core.dialogue).
1547
* Various legacy javascript functions have been removed:
1548
    * M.util.focus_login_form and M.util.focus_login_error no longer do anything. Please use jquery instead. See
1549
      lib/templates/login.mustache for an example.
1550
    * Some outdated global JS functions have been removed and should be replaced with calls to jquery
1551
      or alternative approaches:
1552
        checkall, checknone, select_all_in_element_with_id, select_all_in, deselect_all_in, confirm_if, findParentNode,
1553
        filterByParent, stripHTML
1554
    * M.util.init_toggle_class_on_click has been removed.
1555
* The following functions have been deprecated and should not be used any more:
1556
  - file_storage::try_content_recovery  - See MDL-46375 for more information
1557
  - file_storage::content_exists        - See MDL-46375 for more information
1558
  - file_storage::deleted_file_cleanup  - See MDL-46375 for more information
1559
  - file_storage::get_converted_document
1560
  - file_storage::is_format_supported_by_unoconv
1561
  - file_storage::can_convert_documents
1562
  - file_storage::send_test_pdf
1563
  - file_storage::test_unoconv_path
1564
* Following behat steps have been removed from core:
1565
    - I click on "<element_string>" "<selector_string>" in the "<row_text_string>" table row
1566
    - I go to notifications page
1567
    - I add "<filename_string>" file from recent files to "<filepicker_field_string>" filepicker
1568
    - I upload "<filepath_string>" file to "<filepicker_field_string>" filepicker
1569
    - I create "<foldername_string>" folder in "<filepicker_field_string>" filepicker
1570
    - I open "<foldername_string>" folder from "<filepicker_field_string>" filepicker
1571
    - I unzip "<filename_string>" file from "<filepicker_field_string>" filepicker
1572
    - I zip "<filename_string>" folder from "<filepicker_field_string>" filepicker
1573
    - I delete "<file_or_folder_name_string>" from "<filepicker_field_string>" filepicker
1574
    - I send "<message_contents_string>" message to "<username_string>"
1575
    - I add "<user_username_string>" user to "<cohort_idnumber_string>" cohort
1576
    - I add "<username_string>" user to "<group_name_string>" group
1577
    - I fill in "<field_string>" with "<value_string>"
1578
    - I select "<option_string>" from "<select_string>"
1579
    - I select "<radio_button_string>" radio button
1580
    - I check "<option_string>"
1581
    - I uncheck "<option_string>"
1582
    - the "<field_string>" field should match "<value_string>" value
1583
    - the "<checkbox_string>" checkbox should be checked
1584
    - the "<checkbox_string>" checkbox should not be checked
1585
    - I fill the moodle form with:
1586
    - "<element_string>" "<selector_string>" should exists
1587
    - "<element_string>" "<selector_string>" should not exists
1588
    - the following "<element_string>" exists:
1589
* get_user_capability_course() now has an additional parameter 'limit'. This can be used to return a set number of records with
1590
  the submitted capability. The parameter 'fieldsexceptid' will now accept context fields which can be used for preloading.
1591
* The caching option 'immutable' has been added to send_stored_file() and send_file().
1592
* New adhoc task refresh_mod_calendar_events_task that updates existing calendar events of modules.
1593
* New 'priority' column for the event table to determine which event to show in case of events with user and group overrides.
1594
* Webservices core_course_search_courses and core_course_get_courses_by_field will always return the sortorder field.
1595
* core_course_external::get_activities_overview has been deprecated. Please do not call this function any more.
1596
* Changed the pix mustache template helper to accept context variables for the key, component and alt text.
1597
* New auth_plugin_base helper methods:
1598
  - get_identity_providers() - Retrieves available auth identity providers.
1599
  - prepare_identity_providers_for_output() - Prepares auth identity provider data for output (e.g. to templates, WS, etc.).
1600
 
1601
=== 3.2 ===
1602
 
1603
* Custom roles with access to any part of site administration that do not use the manager archetype will need
1604
  moodle/site:configview capability added.
1605
* Admin setting "Show My courses expanded on Dashboard" has been removed.
1606
* Some backwards and forwards compatibility has been added for different bootstrap versions.
1607
  This is to allow the same markup to work in "clean" and "boost" themes alot of the time. It is also to allow user text
1608
  with bootstrap classes to keep working in the new theme. See MDL-56004 for the list of supported classes.
1609
* MForms element 'submitlink' has been deprecated.
1610
* Searchable selector form element is now a wrapper for autocomplete. A "No selection" option is automatically
1611
  added to the options list for best backwards compatibility - if you were manually adding a "no selection" option you will need
1612
  to remove it.
1613
* Node.js versions >=4 are now required to run grunt.
1614
* JQuery has been updated to 3.1.0. JQuery migrate plugins are no longer shipped - please read
1615
  https://jquery.com/upgrade-guide/3.0/ and update your javascript.
1616
* New option 'blanktarget' added to format_text. This option adds target="_blank" to links
1617
* A new webservice structure `external_files` has been created which provides a standardised view of files in Moodle and
1618
  should be used for all file return descriptions.
1619
  Files matching this format can be retrieved via the new `external_util::get_area_files` method.
1620
  See MDL-54951 for further information.
1621
* The parameter $usepost of the following functions has been deprecated and is not used any more:
1622
  - get_max_upload_file_size()
1623
  - get_user_max_upload_file_size()
1624
* The following classes have been removed and should not be used any more:
1625
    - boxclient - See MDL-49599 for more information.
1626
* The following functions have been removed and should not be used any more:
1627
    - file_modify_html_header() - See MDL-29738 for more information.
1628
* core_grades_external::get_grades has been deprecated. Please do not call this function any more.
1629
  External function gradereport_user_external::get_grade_items can be used for retrieving the course grades information.
1630
* New option 'escape' added to format_string. When true (default), escapes HTML entities from the string
1631
* The following functions have been deprecated and are not used any more:
1632
  - get_records_csv() Please use csv_import_reader::load_csv_content() instead.
1633
  - put_records_csv() Please use download_as_dataformat (lib/dataformatlib.php) instead.
1634
  - zip_files()   - See MDL-24343 for more information.
1635
  - unzip_file()  - See MDL-24343 for more information.
1636
  - print_log()           - See MDL-43681 for more information
1637
  - print_log_csv()       - See MDL-43681 for more information
1638
  - print_log_ods()       - See MDL-43681 for more information
1639
  - print_log_xls()       - See MDL-43681 for more information
1640
  - print_mnet_log()      - See MDL-43681 for more information
1641
  - build_logs_array()    - See MDL-43681 for more information
1642
  - get_logs()            - See MDL-43681 for more information
1643
  - get_logs_usercourse() - See MDL-43681 for more information
1644
  - get_logs_userday()    - See MDL-43681 for more information
1645
  - prevent_form_autofill_password() Please do not use anymore.
1646
* The password_compat library was removed as it is no longer required.
1647
* Phpunit has been upgraded to 5.4.x and following has been deprecated and is not used any more:
1648
  - setExpectedException(), use @expectedException or $this->expectException() and $this->expectExceptionMessage()
1649
  - getMock(), use createMock() or getMockBuilder()->getMock()
1650
  - UnitTestCase class is removed.
1651
* The following methods have been finally deprecated and should no longer be used:
1652
  - course_modinfo::build_section_cache()
1653
  - cm_info::get_deprecated_group_members_only()
1654
  - cm_info::is_user_access_restricted_by_group()
1655
* The following methods in cm_info::standardmethods have also been finally deprecated and should no longer be used:
1656
  - cm_info::get_after_edit_icons()
1657
  - cm_info::get_after_link()
1658
  - cm_info::get_content()
1659
  - cm_info::get_custom_data()
1660
  - cm_info::get_extra_classes()
1661
  - cm_info::get_on_click()
1662
  - cm_info::get_url()
1663
  - cm_info::obtain_dynamic_data()
1664
  Calling them through the magic method __call() will throw a coding exception.
1665
* The alfresco library has been removed from core. It was an old version of
1666
  the library which was not compatible with newer versions of Alfresco.
1667
* Added down arrow: $OUTPUT->darrow.
1668
* All file_packer implementations now accept an additional parameter to allow a simple boolean return value instead of
1669
  an array of individual file statuses.
1670
* "I set the field "field_string" to multiline:" now end with colon (:), as PyStrings is supposed to end with ":"
1671
* New functions to support deprecation of events have been added to the base event. See MDL-46214 for further details.
1672
* A new function `get_name_with_info` has been added to the base event. This function adds information about event
1673
  deprecations and should be used where this information is relevant.
1674
* Following api's have been deprecated in behat_config_manager, please use behat_config_util instead.
1675
  - get_features_with_tags
1676
  - get_components_steps_definitions
1677
  - get_config_file_contents
1678
  - merge_behat_config
1679
  - get_behat_profile
1680
  - profile_guided_allocate
1681
  - merge_config
1682
  - clean_path
1683
  - get_behat_tests_path
1684
* behat_util::start_test_mode() accepts 3 options now:
1685
  - 1. Theme sute with all features: If behat should initialise theme suite with all core features.
1686
  - 2. Parallel runs: How many parallel runs will be running.
1687
  - 3. Run: Which process behat should be initialise for.
1688
* behat_context_helper::set_session() has been deprecated, please use behat_context_helper::set_environment() instead.
1689
* data-fieldtype="type" attribute has been added to form field default template.
1690
* form elements extending MoodleQuickForm_group must call $this->createFormElement() instead of
1691
  @MoodleQuickForm::createElement() in order to be compatible with PHP 7.1
1692
* Relative paths in $CFG->alternateloginurl will be resolved to absolute path within moodle site. Previously they
1693
  were resolved to absolute path within the server. That means:
1694
  - $CFG->wwwroot: http://example.com/moodle
1695
  - $CFG->alternateloginurl : /my/super/login.php
1696
  - Login url will be: http://example.com/moodle/my/super/login.php (moodle root based)
1697
* Database (DML) layer:
1698
  - new sql_equal() method available for places where case sensitive/insensitive varchar comparisons are required.
1699
* PostgreSQL connections now use advanced options to reduce connection overhead.  These options are not compatible
1700
  with some connection poolers.  The dbhandlesoptions parameter has been added to allow the database to configure the
1701
  required defaults. The parameters that are required in the database are;
1702
    ALTER DATABASE moodle SET client_encoding = UTF8;
1703
    ALTER DATABASE moodle SET standard_conforming_strings = on;
1704
    ALTER DATABASE moodle SET search_path = 'moodle,public';  -- Optional, if you wish to use a custom schema.
1705
  You can set these options against the database or the moodle user who connects.
1706
* Some form elements have been refined to better support right-to-left languages. In RTL,
1707
  most fields should not have their direction flipped, a URL, a path to a file, a number, ...
1708
  are always displayed LTR. Input fields and text areas now will best guess whether they
1709
  should be forced to be displayed in LTR based on the PARAM type associated with it. You
1710
  can call $mform->setForceLtr($elementName, true/false) on some form fields to manually
1711
  set the value.
1712
* Action menus do_not_enhance() is deprecated, use a list of action_icon instead.
1713
* The user_not_fully_set_up() function has a new $strict parameter (defaulting to true) in order to decide when
1714
  custom fields (and other checks) should be evaluated to determine if the user has been completely setup.
1715
* profile_field_base class has new methods: get_field_config_for_external() and get_field_properties().
1716
  This two new methods should be implemented by profile field plugins to make them compatible with Web Services.
1717
* The minifier library used by core_minify has been switched to https://github.com/matthiasmullie/minify - there are minor differences
1718
  in minifier output.
1719
* context_header additional buttons can now have a class attribute provided in the link attributes.
1720
* The return signature for the antivirus::scan_file() function has changed.
1721
  The calling function will now handle removal of infected files from Moodle based on the new integer return value.
1722
* The first parameter $eventdata of both message_send() and \core\message\manager::send_message() should
1723
  be \core\message\message. Use of stdClass is deprecated.
1724
* The message_sent event now expects other[courseid] to be always set, exception otherwise. For BC with contrib code,
1725
  message_sent::create_from_ids() will show a debugging notice if the \core\message\message being sent is missing
1726
  the courseid property, defaulting to SITEID automatically. In Moodle 3.6 (MDL-55449) courseid will be fully mandatory
1727
  for all messages sent.
1728
* The send_confirmation_email() function has a new optional parameter $confirmationurl to provide a different confirmation URL.
1729
* Introduced a new hook for plugin developers:
1730
    - <component>_course_module_background_deletion_recommended()
1731
  This hook should be used in conjunction with the existing '<component>_pre_course_module_delete($mod)'. It must
1732
  return a boolean and is called by core to check whether a plugin's implementation of
1733
  <component>_pre_course_module_deleted($mod) will take a long time. A plugin should therefore only implement this
1734
  function if it also implements <component>_pre_course_module_delete($mod).
1735
  An example in current use is recyclebin, which performs what can be a lengthy backup process in
1736
  tool_recyclebin_pre_course_module_delete. The recyclebin, if enabled, now returns true in its implementation of
1737
  tool_recyclebin_course_module_background_deletion_recommended(), to indicate to core that the deletion (and
1738
  execution of tool_recyclebin_pre_course_module_delete) should be handled with an adhoc task, meaning it will not
1739
  occur in real time.
1740
 
1741
=== 3.1 ===
1742
 
1743
* Webservice function core_course_search_courses accepts a new parameter 'limittoenrolled' to filter the results
1744
  only to courses the user is enrolled in, and are visible to them.
1745
* External functions that are not calling external_api::validate_context are buggy and will now generate
1746
  exceptions. Previously they were only generating warnings in the webserver error log.
1747
  See https://moodledev.io/docs/apis/subsystems/external/security
1748
* The moodle/blog:associatecourse and moodle/blog:associatemodule capabilities has been removed.
1749
* The following functions has been finally deprecated and can not be used any more:
1750
    - profile_display_badges()
1751
    - useredit_shared_definition_preferences()
1752
    - calendar_normalize_tz()
1753
    - get_user_timezone_offset()
1754
    - get_timezone_offset()
1755
    - get_list_of_timezones()
1756
    - calculate_user_dst_table()
1757
    - dst_changes_for_year()
1758
    - get_timezone_record()
1759
    - test_get_list_of_timezones()
1760
    - test_get_timezone_offset()
1761
    - test_get_user_timezone_offset()
1762
* The google api library has been updated to version 1.1.7. There was some important changes
1763
  on the SSL handling. Now the SSL version will be determined by the underlying library.
1764
  For more information see https://github.com/googleapis/google-api-php-client/pull/644
1765
* The get_role_users() function will now add the $sort fields that are not part
1766
  of the requested fields to the query result and will throw a debugging message
1767
  with the added fields when that happens.
1768
* The core_user::fill_properties_cache() static method has been introduced to be a reference
1769
  and allow standard user fields data validation. Right now only type validation is supported
1770
  checking it against the parameter (PARAM_*) type of the target user field. MDL-52781 is
1771
  going to add support to null/not null and choices validation, replacing the existing code to
1772
  validate the user fields in different places in a common way.
1773
* Webservice function core_course_search_courses now returns results when the search string
1774
  is less than 2 chars long.
1775
* Webservice function core_course_search_courses accepts a new parameter 'requiredcapabilities' to filter the results
1776
  by the capabilities of the current user.
1777
* New mform element 'course' handles thousands of courses with good performance and usability.
1778
* The redirect() function will now redirect immediately if output has not
1779
  already started. Messages will be displayed on the subsequent page using
1780
  session notifications. The type of message output can be configured using the
1781
  fourth parameter to redirect().
1782
* The specification of extra classes in the $OUTPUT->notification()
1783
  function, and \core\output\notification renderable have been deprecated
1784
  and will be removed in a future version.
1785
  Notifications should use the levels found in \core\output\notification.
1786
* The constants for NOTIFY_PROBLEM, NOTIFY_REDIRECT, and NOTIFY_MESSAGE in
1787
  \core\output\notification have been deprecated in favour of NOTIFY_ERROR,
1788
  NOTIFY_WARNING, and NOTIFY_INFO respectively.
1789
* The following functions, previously used (exclusively) by upgrade steps are not available
1790
  anymore because of the upgrade cleanup performed for this version. See MDL-51580 for more info:
1791
    - upgrade_mysql_fix_unsigned_and_lob_columns()
1792
    - upgrade_course_completion_remove_duplicates()
1793
    - upgrade_save_orphaned_questions()
1794
    - upgrade_rename_old_backup_files_using_shortname()
1795
    - upgrade_mssql_nvarcharmax()
1796
    - upgrade_mssql_varbinarymax()
1797
    - upgrade_fix_missing_root_folders()
1798
    - upgrade_course_modules_sequences()
1799
    - upgrade_grade_item_fix_sortorder()
1800
    - upgrade_availability_item()
1801
* A new parameter $ajaxformdata was added to the constructor for moodleform. When building a
1802
  moodleform in a webservice or ajax script (for example using the new fragments API) we
1803
  cannot allow the moodleform to parse it's own data from _GET and _POST - we must pass it as
1804
  an array.
1805
* Plugins can extend the navigation for user by declaring the following callback:
1806
  <frankenstyle>_extend_navigation_user(navigation_node $parentnode, stdClass $user,
1807
                                        context_user $context, stdClass $course,
1808
                                        context_course $coursecontext)
1809
* The function notify() now throws a debugging message - see MDL-50269.
1810
* Ajax calls going through lib/ajax/* now validate the return values before sending
1811
  the response. If the validation does not pass an exception is raised. This behaviour
1812
  is consistent with web services.
1813
* Several changes in Moodle core, standard plugins and third party libraries to
1814
  ensure compatibility with PHP7. All plugins are recommended to perform testing
1815
  against PHP7 as well. Refer to https://moodledev.io/general/development/policies/php for more
1816
  information. The following changes may affect you:
1817
  * Class moodleform, moodleform_mod and some module classes have been changed to use
1818
    __construct() for the constructor. Calling parent constructors by the class
1819
    name will display debugging message. Incorrect: parent::moodleform(),
1820
    correct: parent::__construct()
1821
  * All form elements have also changed the constructor syntax. No changes are
1822
    needed for using form elements, however if plugin defines new form element it
1823
    needs to use correct syntax. For example, incorrect: parent::HTML_QuickForm_input(),
1824
    HTML_QuickForm_input::HTML_QuickForm_input(), $this->HTML_QuickForm_input().
1825
    Correct: HTML_QuickForm_input::__construct() or parent::__construct().
1826
  * profile_field_base::profile_field_base() is deprecated, use parent::__construct()
1827
    in custom profile fields constructors. Similar deprecations in exsiting
1828
    profile_field_* classes.
1829
  * user_filter_type::user_filter_type() is deprecated, use parent::__construct() in
1830
    custom user filters. Similar deprecations in existing user_filter_* classes.
1831
  * table_default_export_format_parent::table_default_export_format_parent() is
1832
    deprecated, use parent::__construct() in extending classes.
1833
* groups_delete_group_members() $showfeedback parameter has been removed and is no longer
1834
  respected. Users of this function should output their own feedback if required.
1835
* Number of changes to Tags API, see tag/upgrade.txt for more details
1836
* The previous events API handlers are being deprecated in favour of events 2 API, debugging messages are being displayed if
1837
  there are 3rd party plugins using it. Switch to events 2 API please, see https://docs.moodle.org/dev/Events_API#Event_dispatching_and_observers
1838
  Note than you will need to bump the plugin version so moodle is aware that you removed the plugin's event handlers.
1839
* mforms validation functions are not available in the global JS namespace anymore, event listeners
1840
  are assigned to fields and buttons through a self-contained JS function.
1841
* Added $CFG->urlrewriteclass option to config.php allowing clean / semantic urls to
1842
  be implemented in a plugin, eg local_cleanurls.
1843
* $CFG->pathtoclam global setting has been moved to clamav antivirus plugin setting of the same name.
1844
* clam_message_admins() and get_clam_error_code() have been deprecated, its functionality
1845
  is now a part of \antivirus_clamav\scanner class methods.
1846
* \repository::antivir_scan_file() has been deprecated, \core\antivirus\manager::scan_file() that
1847
  applies antivirus plugins is replacing its functionality.
1848
* Added core_text::str_max_bytes() which safely truncates multi-byte strings to a maximum number of bytes.
1849
* Zend Framework has been removed completely.
1850
* Any plugin can report when a scale is being used with the callback function [pluginname]_scale_used_anywhere(int $scaleid).
1851
* Changes in file_rewrite_pluginfile_urls: Passing a new option reverse = true in the $options var will make the function to convert
1852
  actual URLs in $text to encoded URLs in the @@PLUGINFILE@@ form.
1853
* behat_util::is_server_running() is removed, please use behat_util::check_server_status() instead.
1854
* Behat\Mink\Selector\SelectorsHandler::xpathLiteral() method is deprecated use behat_context_helper::escape instead
1855
  when building Xpath, or pass the unescaped value when using the named selector.',
1856
* table_sql download process is using the new data formats plugin which you can't use if you are buffering any output
1857
    * flexible_table::get_download_menu(), considered private, has been deleted. Use
1858
      $OUTPUT->download_dataformat_selector() instead.
1859
  when building Xpath, or pass the unescaped value when using the named selector.
1860
* Add new file_is_executable(), to consistently check for executables even in Windows (PHP bug #41062).
1861
* Introduced new hooks for plugin developers.
1862
    - <component>_pre_course_category_delete($category)
1863
    - <component>_pre_course_delete($course)
1864
    - <component>_pre_course_module_delete($cm)
1865
    - <component>_pre_block_delete($instance)
1866
    - <component>_pre_user_delete($user)
1867
  These hooks allow developers to use the item in question before it is deleted by core. For example, if your plugin is
1868
  a module (plugins located in the mod folder) called 'xxx' and you wish to interact with the user object before it is
1869
  deleted then the function to create would be mod_xxx_pre_user_delete($user) in mod/xxx/lib.php.
1870
* pear::Net::GeoIP has been removed.
1871
 
1872
=== 3.0 ===
1873
 
1874
* Minify updated to 2.2.1
1875
* htmlpurifier upgraded to 4.7.0
1876
* Less.php upgraded to 1.7.0.9
1877
* The horde library has been updated to version 5.2.7.
1878
* Google libraries (lib/google) updated to 1.1.5
1879
* Html2Text library has been updated to the latest version of the library.
1880
* External functions x_is_allowed_from_ajax() methods have been deprecated. Define 'ajax' => true in db/services.php instead.
1881
* External functions can be called without a session if they define 'loginrequired' => true in db/services.php.
1882
* All plugins are required to declare their frankenstyle component name via
1883
  the $plugin->component property in their version.php file. See
1884
  https://moodledev.io/docs/apis/commonfiles/version.php for details (MDL-48494).
1885
* PHPUnit is upgraded to 4.7. Some tests using deprecated assertions etc may need changes to work correctly.
1886
* Users of the text editor API to manually create a text editor should call set_text before calling use_editor.
1887
* Javascript - SimpleYUI and the Y instance used for modules have been merged. Y is now always the same instance of Y.
1888
* get_referer() has been deprecated, please use the get_local_referer function instead.
1889
* \core\progress\null is renamed to \core\progress\none for improved PHP7 compatibility as null is a reserved word (see MDL-50453).
1890
* \webservice_xmlrpc_client now respects proxy server settings. If your XMLRPC server is available on your local network and not via your proxy server, you may need to add it to the list of proxy
1891
  server exceptions in $CFG->proxybypass. See MDL-39353 for details.
1892
* Group and groupings idnumbers can now be passed to and/or are returned from the following web services functions:
1893
  ** core_group_external::create_groups
1894
  ** core_group_external::get_groups
1895
  ** core_group_external::get_course_groups
1896
  ** core_group_external::create_groupings
1897
  ** core_group_external::update_groupings
1898
  ** core_group_external::get_groupings
1899
  ** core_group_external::get_course_groupings
1900
  ** core_group_external::get_course_user_groups
1901
* Following functions are removed from core. See MDL-50049 for details.
1902
    password_compat_not_supported()
1903
    session_get_instance()
1904
    session_is_legacy()
1905
    session_kill_all()
1906
    session_touch()
1907
    session_kill()
1908
    session_kill_user()
1909
    session_set_user()
1910
    session_is_loggedinas()
1911
    session_get_realuser()
1912
    session_loginas()
1913
    js_minify()
1914
    css_minify_css()
1915
    update_login_count()
1916
    reset_login_count()
1917
    check_gd_version()
1918
    update_log_display_entry()
1919
    get_recent_enrolments()
1920
    groups_filter_users_by_course_module_visible()
1921
    groups_course_module_visible()
1922
    error()
1923
    formerr()
1924
    editorhelpbutton()
1925
    editorshortcutshelpbutton()
1926
    choose_from_menu()
1927
    update_event()
1928
    get_generic_section_name()
1929
    get_all_sections()
1930
    add_mod_to_section()
1931
    get_all_mods()
1932
    get_course_section()
1933
    format_weeks_get_section_dates()
1934
    get_print_section_cm_text()
1935
    print_section_add_menus()
1936
    make_editing_buttons()
1937
    print_section()
1938
    print_overview()
1939
    print_recent_activity()
1940
    delete_course_module()
1941
    update_category_button()
1942
    make_categories_list()
1943
    category_delete_move()
1944
    category_delete_full()
1945
    move_category()
1946
    course_category_hide()
1947
    course_category_show()
1948
    get_course_category()
1949
    create_course_category()
1950
    get_all_subcategories()
1951
    get_child_categories()
1952
    get_categories()
1953
    print_course_search()
1954
    print_my_moodle()
1955
    print_remote_course()
1956
    print_remote_host()
1957
    print_whole_category_list()
1958
    print_category_info()
1959
    get_course_category_tree()
1960
    print_courses()
1961
    print_course()
1962
    get_category_courses_array()
1963
    get_category_courses_array_recursively()
1964
    blog_get_context_url()
1965
    get_courses_wmanagers()
1966
    convert_tree_to_html()
1967
    convert_tabrows_to_tree()
1968
    can_use_rotated_text()
1969
    get_parent_contexts()
1970
    get_parent_contextid()
1971
    get_child_contexts()
1972
    create_contexts()
1973
    cleanup_contexts()
1974
    build_context_path()
1975
    rebuild_contexts()
1976
    preload_course_contexts()
1977
    context_moved()
1978
    fetch_context_capabilities()
1979
    context_instance_preload()
1980
    get_contextlevel_name()
1981
    print_context_name()
1982
    mark_context_dirty()
1983
    delete_context()
1984
    get_context_url()
1985
    get_course_context()
1986
    get_user_courses_bycap()
1987
    get_role_context_caps()
1988
    get_courseid_from_context()
1989
    context_instance_preload_sql()
1990
    get_related_contexts_string()
1991
    get_plugin_list_with_file()
1992
    check_browser_operating_system()
1993
    check_browser_version()
1994
    get_device_type()
1995
    get_device_type_list()
1996
    get_selected_theme_for_device_type()
1997
    get_device_cfg_var_name()
1998
    set_user_device_type()
1999
    get_user_device_type()
2000
    get_browser_version_classes()
2001
    generate_email_supportuser()
2002
    badges_get_issued_badge_info()
2003
    can_use_html_editor()
2004
    enrol_cohort_get_cohorts()
2005
    enrol_cohort_can_view_cohort()
2006
    cohort_get_visible_list()
2007
    enrol_cohort_enrol_all_users()
2008
    enrol_cohort_search_cohorts()
2009
* The never unused webdav_locks table was dropped.
2010
* The actionmenu hideMenu() function now expects an EventFacade object to be passed to it,
2011
  i.e. a call to M.core.actionmenu.instance.hideMenu() should be change to M.core.actionmenu.instance.hideMenu(e)
2012
* In the html_editors (tinyMCE, Atto), the manage files button can be hidden by changing the 'enable_filemanagement' option to false.
2013
* external_api::validate_context now is public, it can be called from other classes.
2014
* rss_error() now supports returning of correct HTTP status of error and will return '404 Not Found'
2015
  unless other status is specified.
2016
* Plugins can extend the navigation for categories settings by declaring the following callback:
2017
  <frankenstyle>_extend_navigation_category_settings(navigation_node, context_coursecat)
2018
* The clilib.php provides two new functions cli_write() and cli_writeln() that should be used for outputting texts from the command
2019
  line interface scripts.
2020
* External function core_course_external::get_course_contents returned parameter "name" has been changed to PARAM_RAW,
2021
  this is because the new external_format_string function may return raw data if the global moodlewssettingraw parameter is used.
2022
* Function is_web_crawler() has been deprecated, please use core_useragent::is_web_crawler() instead.
2023
 
2024
=== 2.9.1 ===
2025
 
2026
* New methods grade_grade::get_grade_max() and get_grade_min() must be used rather than directly the public properties rawgrademax and rawgrademin.
2027
* New method grade_item::is_aggregate_item() indicates when a grade_item is an aggreggated type grade.
2028
 
2029
=== 2.9 ===
2030
 
2031
* The default home page for users has been changed to the dashboard (formely my home). See MDL-45774.
2032
* Support for rendering templates from php or javascript has been added. See MDL-49152.
2033
* Support for loading AMD javascript modules has been added. See MDL-49046.
2034
* Webservice core_course_delete_courses now return warning messages on any failures and does not try to rollback the entire deletion.
2035
* \core\event\course_viewed 'other' argument renamed from coursesectionid to coursesectionnumber as it contains the section number.
2036
* New API core_filetypes::add_type (etc.) allows custom filetypes to be added and modified.
2037
* PHPUnit: PHPMailer Sink is now started for all tests and is setup within the phpunit wrapper for advanced tests.
2038
  Catching debugging messages when sending mail will no longer work. Use $sink = $this->redirectEmails(); and then check
2039
  the message in the sink instead.
2040
* The file pluginlib.php was deprecated since 2.6 and has now been removed, do not include or require it.
2041
* \core_component::fetch_subsystems() now returns a valid path for completion component instead of null.
2042
* Deprecated JS global methods have been removed (show_item, destroy_item, hide_item, addonload, getElementsByTagName, findChildNodes).
2043
* For 3rd party plugin specific environment.xml files, it's now possible to specify version independent checks by using the
2044
  <PLUGIN name="component_name"> tag instead of the version dependent <MOODLE version="x.y"> one. If the PLUGIN tag is used any
2045
  Moodle specific tags will be ignored.
2046
* html_table: new API for adding captions to tables (new field, $table->caption) and subsequently hiding said captions from sighted users using accesshide (enabled using $table->captionhide).
2047
* The authorization procedure in the mdeploy.php script has been improved. The script
2048
  now relies on the main config.php when deploying an available update.
2049
* sql_internal_reader and sql_select_reader interfaces have been deprecated in favour of sql_internal_table_reader
2050
  and sql_reader which use iterators to be more memory efficient.
2051
* $CFG->enabletgzbackups setting has been removed as now backups are stored internally using .tar.gz format by default, you can
2052
  set $CFG->usezipbackups to store them in zip format. This does not affect the restore process, which continues accepting both.
2053
* Added support for custom string manager implementations via $CFG->customstringmanager
2054
  directive in the config.php. See MDL-49361 for details.
2055
* Add new make_request_directory() for creation of per-request files.
2056
* Added generate_image_thumbnail_from_string. This should be used instead of generate_image_thumbnail when the source is a string.
2057
  This prevents the need to write files to disk unnecessarily.
2058
* Added generate_image_thumbnail to stored_file class. This should be used when generating thumbnails for stored files.
2059
  This prevents the need to write files to disk unnecessarily.
2060
* Removed pear/HTTP/WebDav. See MDL-49534 for details.
2061
* Use standard PHP date time classes and methods - see new core_date class for timezone normalisation methods.
2062
* Moved lib/google/Google/ to lib/google/src/Google. This is to address autoloader issues with Google's provided autoloader
2063
  for the library. See MDL-49519 for details.
2064
* The outdated lib/google/Google_Client.php and related files have been completely removed. To use
2065
  the new client, read lib/google/readme_moodle.txt, please.
2066
* profile_display_badges() has been deprecated. See MDL-48935 for details.
2067
* Added a new method add_report_nodes() to pagelib.php. If you are looking to add links to the user profile page under the heading "Reports"
2068
  then please use this function to ensure that the breadcrumb and navigation block are created properly for all user profile pages.
2069
* process_new_icon() now does not always return a PNG file. When possible, it will try to keep the format of the original file.
2070
  Set the new argument $preferpng to true to force PNG. See MDL-46763 and MDL-50041 for details.
2071
 
2072
=== 2.8 ===
2073
 
2074
* Gradebook grade category option "aggregatesubcats" has been removed completely.
2075
  This means that the database column is removed, the admin settings are removed and
2076
  the properties from the grade_category object have been removed. If any courses were
2077
  found to be using this setting, a warning to check the grades will be shown in the
2078
  course grader report after upgrading the site. The same warning will be shown on
2079
  courses restored from backup that had this setting enabled (see MDL-47503).
2080
* lib/excelllib.class.php has been updated. The class MoodleExcelWorkbook will now only produce excel 2007 files.
2081
* renderers: We now remove the suffix _renderable when looking for a render method for a renderable.
2082
  If you have a renderable class named like "blah_renderable" and have a method on a renderer named "render_blah_renderable"
2083
  you will need to change the name of your render method to "render_blah" instead, as renderable at the end is no longer accepted.
2084
* New functions get_course_and_cm_from_cmid($cmorid, $modulename) and
2085
  get_course_and_cm_from_instance($instanceorid, $modulename) can be used to
2086
  more efficiently load these basic data objects at the start of a script.
2087
* New function cm_info::create($cm) can be used when you need a cm_info
2088
  object, but have a $cm which might only be a standard database record.
2089
* $CFG->enablegroupmembersonly no longer exists.
2090
* Scheduled tasks have gained support for syntax to introduce variability when a
2091
  task will run across installs. When a when hour or minute are defined as 'R'
2092
  they will be installed with a random hour/minute value.
2093
* Several classes grade_edit_tree_column_xxx were removed since grades setup page
2094
  has been significantly changed. These classes should not be used outside of
2095
  gradebook or developers can copy them into their plugins from 2.7 branch.
2096
* Google APIs Client Library (lib/google/) has been upgraded to 1.0.5-beta and
2097
  API has changed dramatically without backward compatibility. Any code accessing
2098
  it must be amended. It does not apply to lib/googleapi.php. See MDL-47297
2099
* Added an extra parameter to the function get_formatted_help_string() (default null) which is used to specify
2100
  additional string parameters.
2101
* User settings node and course node in navigation now support callbacks from admin tools.
2102
* grade_get_grades() optional parameteres $itemtype, $itemmodule, $iteminstance are now required.
2103
 
2104
DEPRECATIONS:
2105
* completion_info->get_incomplete_criteria() is deprecated and will be removed in Moodle 3.0.
2106
* grade_category::aggregate_values() is deprecated and will be removed in Moodle 3.0.
2107
* groups_filter_users_by_course_module_visible() is deprecated; replace with
2108
  core_availability\info::filter_user_list. Will be removed in Moodle 3.0.
2109
* groups_course_module_visible() is deprecated; replace with $cm->uservisible.
2110
* cm_info property $cm->groupmembersonly is deprecated and always returns 0.
2111
  Use core_availability\info::filter_user_list if trying to determine which
2112
  other users can see an activity.
2113
* cm_info method $cm->is_user_access_restricted_by_group() is deprecated and
2114
  always returns false. Use $cm->uservisible to determine whether the user can
2115
  access the activity.
2116
* Constant FEATURE_GROUPMEMBERSONLY (used in module _supports functions) is
2117
  deprecated.
2118
* cohort_get_visible_list() is deprecated. There is a better function cohort_get_available_cohorts()
2119
  that respects user capabilities to view cohorts.
2120
* enrol_cohort_get_cohorts() and enrol_cohort_search_cohorts() are deprecated since
2121
  functionality is removed. Please use cohort_get_available_cohorts()
2122
* enrol_cohort_enrol_all_users() is deprecated; enrol_manual is now responsible for this action
2123
* enrol_cohort_can_view_cohort() is deprecated; replace with cohort_can_view_cohort()
2124
 
2125
=== 2.6.4 / 2.7.1 ===
2126
 
2127
* setnew_password_and_mail() and update_internal_user_password() will trigger
2128
  \core\event\user_password_updated. Previously they used to generate
2129
  \core\event\user_updated event.
2130
* update_internal_user_password() accepts optional boolean $fasthash for fast
2131
  hashing.
2132
* user_update_user() and user_create_user() api's accept optional param
2133
  $triggerevent to avoid respective events to be triggred from the api's.
2134
 
2135
=== 2.7 ===
2136
 
2137
* PHPUnit cannot be installed via PEAR any more, please use composer package manager instead.
2138
* $core_renderer->block_move_target() changed to support more verbose move-block-here descriptions.
2139
 
2140
Events and Logging:
2141
* Significant changes in Logging API. For upgrading existing events_trigger() and
2142
  add_to_log() see http://docs.moodle.org/dev/Migrating_logging_calls_in_plugins
2143
  For accessing logs from plugins see http://docs.moodle.org/dev/Migrating_log_access_in_reports
2144
* The validation of the following events is now stricter (see MDL-45445):
2145
    - \core\event\blog_entry_created
2146
    - \core\event\blog_entry_deleted
2147
    - \core\event\blog_entry_updated
2148
    - \core\event\cohort_member_added
2149
    - \core\event\cohort_member_removed
2150
    - \core\event\course_category_deleted
2151
    - \core\event\course_completed
2152
    - \core\event\course_content_deleted
2153
    - \core\event\course_created
2154
    - \core\event\course_deleted
2155
    - \core\event\course_restored
2156
    - \core\event\course_section_updated (see MDL-45229)
2157
    - \core\event\email_failed
2158
    - \core\event\group_member_added
2159
    - \core\event\group_member_removed
2160
    - \core\event\note_created
2161
    - \core\event\note_deleted
2162
    - \core\event\note_updated
2163
    - \core\event\role_assigned
2164
    - \core\event\role_deleted
2165
    - \core\event\role_unassigned
2166
    - \core\event\user_graded
2167
    - \core\event\user_loggedinas
2168
    - \core\event\user_profile_viewed
2169
    - \core\event\webservice_token_created
2170
 
2171
DEPRECATIONS:
2172
* $module uses in mod/xxx/version.php files is now deprecated. Please use $plugin instead. It will be removed in Moodle 2.10.
2173
* Update init methods in all event classes - "level" property was renamed to "edulevel", the level property is now deprecated.
2174
* Abstract class \core\event\course_module_instances_list_viewed is deprecated now, use \core\event\instances_list_viewed instead.
2175
* Abstract class core\event\content_viewed has been deprecated. Please extend base event or other relevant abstract class.
2176
* mod_book\event\instances_list_viewed has been deprecated. Please use mod_book\event\course_module_instance_list_viewed instead.
2177
* mod_chat\event\instances_list_viewed has been deprecated. Please use mod_chat\event\course_module_instance_list_viewed instead.
2178
* mod_choice\event\instances_list_viewed has been deprecated. Please use mod_choice\event\course_module_instance_list_viewed instead.
2179
* mod_feedback\event\instances_list_viewed has been deprecated. Please use mod_feedback\event\course_module_instance_list_viewed instead.
2180
* mod_page\event\instances_list_viewed has been deprecated. Please use mod_page\event\course_module_instance_list_viewed instead.
2181
* The constants FRONTPAGECOURSELIST, FRONTPAGETOPICONLY & FRONTPAGECOURSELIMIT have been removed.
2182
* Conditional availability API has moved and changed. The condition_info class is
2183
  replaced by \core_availability\info_module, and condition_info_section by
2184
  \core_availability\info_section. (Code that uses the old classes will generally
2185
  still work.)
2186
* coursemodule_visible_for_user() has been deprecated but still works - replaced
2187
  by a new static function \core_availability\info_module::is_user_visible()
2188
* cm_info::is_user_access_restricted_by_conditional_access has been deprecated
2189
  but still works (it has never done what its name suggests, and is
2190
  unnecessary).
2191
* cm_info and section_info property showavailability has been deprecated, but
2192
  still works (with the caveat that this information is now per-user).
2193
* cm_info and section_info properties availablefrom and availableuntil have been
2194
  deprecated and always return zero (underlying data doesn't have these values).
2195
* section_info property groupingid has been deprecated and always returns zero,
2196
  same deal.
2197
* Various cm_info methods have been deprecated in favour of their read-only properties (get_url(), get_content(), get_extra_classes(),
2198
  get_on_click(), get_custom_data(), get_after_link, get_after_edit_icons)
2199
* The ajaxenabled function has been deprecated and always returns true. All code should be fully functional in Javascript.
2200
* count_login_failures() has been deprecated, use user_count_login_failures() instead. Refer MDL-42891 for details.
2201
 
2202
Conditional availability (activities and sections):
2203
* New conditional availability API in /availability, including new availability
2204
  condition plugins in /availability/condition. The new API is very similar with
2205
  regard to checking availability, but any code that modifies availability settings
2206
  for an activity or section is likely to need substantial changes.
2207
 
2208
YUI:
2209
  * The lightbox attribute for moodle-core-notification-dialogue has been
2210
    deprecated and replaced by the modal attribute. This was actually
2211
    changed in Moodle 2.2, but has only been marked as deprecated now. It
2212
    will be removed in Moodle 2.9.
2213
  * When destroying any type of dialogue based on moodle-core-notification, the relevant content is also removed from
2214
    the DOM. Previously it was left orphaned.
2215
 
2216
JavaSript:
2217
    * The findChildNodes global function has been deprecated. Y.all should
2218
      be used instead.
2219
    * The callback argument to confirm_action and M.util.show_confirm_dialog has been deprecated. If you need to write a
2220
      confirmation which includes a callback, please use moodle-core-notification-confirmation and attach callbacks to the
2221
      events provided.
2222
 
2223
* New locking api and admin settings to configure the system locking type.
2224
* New "Time spent waiting for the database" performance metric displayed along with the
2225
  other MDL_PERF vars; the change affects both the error logs and the vars displayed in
2226
  the page footer.
2227
* Changes in the tag API. The component and contextid are now saved when assigning tags to an item. Please see
2228
  tag/upgrade.txt for more information.
2229
 
2230
=== 2.6 ===
2231
 
2232
* Use new methods from core_component class instead of get_core_subsystems(), get_plugin_types(),
2233
  get_plugin_list(), get_plugin_list_with_class(), get_plugin_directory(), normalize_component(),
2234
  get_component_directory() and get_plugin_list_with_file(). The names of the new methods are
2235
  exactly the same, the only differences are that core_component::get_plugin_types() now always returns
2236
  full paths and core_component::get_plugin_list() does not accept empty parameter any more.
2237
* Use core_text::* instead of textlib:: and also core_collator::* instead of collatorlib::*.
2238
* Use new function moodleform::mock_submit() to simulate form submission in unit tests (backported).
2239
* New $CFG->localcachedir setting useful for cluster nodes. Admins have to update X-Sendfile aliases if used.
2240
* MS SQL Server drivers are now using NVARCHAR(MAX) instead of NTEXT and VARBINARY(MAX) instead of IMAGE,
2241
  this change should be fully transparent and it should help significantly with add-on compatibility.
2242
* The string manager classes were renamed. Note that they should not be modified or used directly,
2243
  always use get_string_manager() to get instance of the string manager.
2244
* The ability to use an 'insecure' rc4encrypt/rc4decrypt key has been removed.
2245
* Use $CFG->debugdeveloper instead of debugging('', DEBUG_DEVELOPER).
2246
* Use set_debugging(DEBUG_xxx) when changing debugging level for current request.
2247
* Function moveto_module() does not modify $mod argument and instead now returns the new module visibility value.
2248
* Use behat_selectors::get_allowed_text_selectors() and behat_selectors::get_allowed_selectors() instead of
2249
  behat_command::$allowedtextselectors and behat_command::$allowedselectors
2250
* Subplugins are supported in admin tools and local plugins.
2251
* file_packer/zip_packer API has been modified so that key functions support a new file_progress interface
2252
  to report progress during long operations. Related to this, zip_archive now supports an estimated_count()
2253
  function that returns an approximate number of entries in the zip faster than the count() function.
2254
* Class cm_info no longer extends stdClass. All properties are read-only and calculated on first request only.
2255
* Class course_modinfo no longer extends stdClass. All properties are read-only.
2256
* Database fields modinfo and sectioncache in table course are removed. Application cache core/coursemodinfo
2257
  is used instead. Course cache is still reset, rebuilt and retrieved using function rebuild_course_cache() and
2258
  get_fast_modinfo(). Purging all caches and every core upgrade purges course modinfo cache as well.
2259
  If function get_fast_modinfo() is called for multiple courses make sure to include field cacherev in course
2260
  object.
2261
* Internal (noreply and support) user support has been added for sending/receiving message.
2262
  Use core_user::get_noreply_user() and core_user::get_support_user() to get noreply and support user's respectively.
2263
  Real users can be used as noreply/support users by setting $CFG->noreplyuserid and $CFG->supportuserid
2264
* New function readfile_allow_large() in filelib.php for use when very large files may need sending to user.
2265
* Use core_plugin_manager::reset_caches() when changing visibility of plugins.
2266
* Implement new method get_enabled_plugins() method in subplugin info classes.
2267
* Each plugin should include version information in version.php.
2268
* Module and block tables do not contain version column any more, use get_config('xx_yy', 'version') instead.
2269
* $USER->password field is intentionally unset so that session data does not contain password hashes.
2270
* Use core_shutdown_manager::register_function() instead of register_shutdown_function().
2271
* New file packer for .tar.gz files; obtain by calling get_file_packer('application/x-gzip'). Intended initially
2272
  for use in backup/restore only, as there are limitations on supported filenames. Also new packer for
2273
  backups which supports both compression formats; get_file_packer('application/vnd.moodle.backup').
2274
* New optional parameter to stored_file::get_content_file_handle to open file handle with 'gzopen' instead
2275
  of 'fopen' to read gzip-compressed files if required.
2276
* update_internal_user_password() and setnew_password_and_mail() now trigger user_updated event.
2277
* Add thirdpartylibs.xml file to plugins that bundle any 3rd party libraries.
2278
* New class introduced to help auto generate zIndex values for modal dialogues. Class "moodle-has-zindex"
2279
  should set on any element which uses a non-default zindex and needs to ensure it doesn't show above a
2280
  dialogue.
2281
* $CFG->filelifetime is now used consistently for most file serving operations, the default was lowered
2282
  to 6 hours from 24 hours because etags and x-sendfile support should make file serving less expensive.
2283
* Date format locale charset for windows server will come from calendar type and for gregorian it will use
2284
  lang file.
2285
* The library to interact with Box.net (class boxclient) is only compatible with their APIv1 which
2286
  reaches its end of life on the 14th of Dec. You should migrate your scripts to make usage of the
2287
  new class boxnet_client(). Note that the method names and return values have changed.
2288
* Settings pages are now possible for Calendar type plugins. Calendar type plugins that require a settings page to
2289
  work properly will need to set their requires version to a number that is equal to or grater than the 2.6.1 release version.
2290
* The admin/tool/generator tool was overhauled to use testing data generators and the previous interface to create
2291
  test data was removed (it was not working correctly anyway). If you were using this tool you will probably need to
2292
  update your code.
2293
 
2294
DEPRECATIONS:
2295
Various previously deprecated functions have now been altered to throw DEBUG_DEVELOPER debugging notices
2296
and will be removed in a future release (target: 2.8), a summary follows:
2297
 
2298
Accesslib:
2299
    * get_context_instance()                ->  context_xxxx::instance()
2300
    * get_context_instance_by_id()          ->  context::instance_by_id($id)
2301
    * get_system_context()                  ->  context_system::instance()
2302
    * context_moved()                       ->  context::update_moved()
2303
    * preload_course_contexts()             ->  context_helper::preload_course()
2304
    * context_instance_preload()            ->  context_helper::preload_from_record()
2305
    * context_instance_preload_sql()        ->  context_helper::get_preload_record_columns_sql()
2306
    * get_contextlevel_name()               ->  context_helper::get_level_name()
2307
    * create_contexts()                     ->  context_helper::create_instances()
2308
    * cleanup_contexts()                    ->  context_helper::cleanup_instances()
2309
    * build_context_path()                  ->  context_helper::build_all_paths()
2310
    * print_context_name()                  ->  $context->get_context_name()
2311
    * mark_context_dirty()                  ->  $context->mark_dirty()
2312
    * delete_context()                      ->  $context->delete_content() or context_helper::delete_instance()
2313
    * get_context_url()                     ->  $context->get_url()
2314
    * get_course_context()                  ->  $context->get_course_context()
2315
    * get_parent_contexts()                 ->  $context->get_parent_context_ids()
2316
    * get_parent_contextid()                ->  $context->get_parent_context()
2317
    * get_child_contexts()                  ->  $context->get_child_contexts()
2318
    * rebuild_contexts()                    ->  $context->reset_paths()
2319
    * get_user_courses_bycap()              ->  enrol_get_users_courses()
2320
    * get_courseid_from_context()           ->  $context->get_course_context(false)
2321
    * get_role_context_caps()               ->  (no replacement)
2322
    * load_temp_role()                      ->  (no replacement)
2323
    * remove_temp_roles()                   ->  (no replacement)
2324
    * get_related_contexts_string()         ->  $context->get_parent_context_ids(true)
2325
    * get_recent_enrolments()               ->  (no replacement)
2326
 
2327
Enrollment:
2328
    * get_course_participants()             -> get_enrolled_users()
2329
    * is_course_participant()               -> is_enrolled()
2330
 
2331
Output:
2332
    * current_theme()                       -> $PAGE->theme->name
2333
    * skip_main_destination()               -> $OUTPUT->skip_link_target()
2334
    * print_container()                     -> $OUTPUT->container()
2335
    * print_container_start()               -> $OUTPUT->container_start()
2336
    * print_container_end()                 -> $OUTPUT->container_end()
2337
    * print_continue()                      -> $OUTPUT->continue_button()
2338
    * print_header()                        -> $PAGE methods
2339
    * print_header_simple()                 -> $PAGE methods
2340
    * print_side_block()                    -> $OUTPUT->block()
2341
    * print_arrow()                         -> $OUTPUT->arrow()
2342
    * print_scale_menu_helpbutton()         -> $OUTPUT->help_icon_scale($courseid, $scale)
2343
    * print_checkbox()                      -> html_writer::checkbox()
2344
 
2345
Navigation:
2346
    * print_navigation()                    -> $OUTPUT->navbar()
2347
    * build_navigation()                    -> $PAGE->navbar methods
2348
    * navmenu()                             -> (no replacement)
2349
    * settings_navigation::
2350
          get_course_modules()              -> (no replacement)
2351
 
2352
Files and repositories:
2353
    * stored_file::replace_content_with()   -> stored_file::replace_file_with()
2354
    * stored_file::set_filesize()           -> stored_file::replace_file_with()
2355
    * stored_file::get_referencelifetime()  -> (no replacement)
2356
    * repository::sync_external_file()      -> see repository::sync_reference()
2357
    * repository::get_file_by_reference()   -> repository::sync_reference()
2358
    * repository::
2359
          get_reference_file_lifetime()     -> (no replacement)
2360
    * repository::sync_individual_file()    -> (no replacement)
2361
    * repository::reset_caches()            -> (no replacement)
2362
 
2363
Calendar:
2364
    * add_event()                           -> calendar_event::create()
2365
    * update_event()                        -> calendar_event->update()
2366
    * delete_event()                        -> calendar_event->delete()
2367
    * hide_event()                          -> calendar_event->toggle_visibility(false)
2368
    * show_event()                          -> calendar_event->toggle_visibility(true)
2369
 
2370
Misc:
2371
    * filter_text()                         -> format_text(), format_string()...
2372
    * httpsrequired()                       -> $PAGE->https_required()
2373
    * detect_munged_arguments()             -> clean_param([...], PARAM_FILE)
2374
    * mygroupid()                           -> groups_get_all_groups()
2375
    * js_minify()                           -> core_minify::js_files()
2376
    * css_minify_css()                      -> core_minify::css_files()
2377
    * course_modinfo::build_section_cache() -> (no replacement)
2378
    * generate_email_supportuser()          -> core_user::get_support_user()
2379
 
2380
Sessions:
2381
    * session_get_instance()->xxx()         -> \core\session\manager::xxx()
2382
    * session_kill_all()                    -> \core\session\manager::kill_all_sessions()
2383
    * session_touch()                       -> \core\session\manager::touch_session()
2384
    * session_kill()                        -> \core\session\manager::kill_session()
2385
    * session_kill_user()                   -> \core\session\manager::kill_user_sessions()
2386
    * session_gc()                          -> \core\session\manager::gc()
2387
    * session_set_user()                    -> \core\session\manager::set_user()
2388
    * session_is_loggedinas()               -> \core\session\manager::is_loggedinas()
2389
    * session_get_realuser()                -> \core\session\manager::get_realuser()
2390
    * session_loginas()                     -> \core\session\manager::loginas()
2391
 
2392
User-agent related functions:
2393
    * check_browser_operating_system()      -> core_useragent::check_browser_operating_system()
2394
    * check_browser_version()               -> core_useragent::check_browser_version()
2395
    * get_device_type()                     -> core_useragent::get_device_type()
2396
    * get_device_type_list()                -> core_useragent::get_device_type_list()
2397
    * get_selected_theme_for_device_type()  -> core_useragent::get_device_type_theme()
2398
    * get_device_cfg_var_name()             -> core_useragent::get_device_type_cfg_var_name()
2399
    * set_user_device_type()                -> core_useragent::set_user_device_type()
2400
    * get_user_device_type()                -> core_useragent::get_user_device_type()
2401
    * get_browser_version_classes()         -> core_useragent::get_browser_version_classes()
2402
 
2403
YUI:
2404
    * moodle-core-notification has been deprecated with a recommendation of
2405
      using its subclasses instead. This is to allow for reduced page
2406
      transport costs. Current subclasses include:
2407
      * dialogue
2408
      * alert
2409
      * confirm
2410
      * exception
2411
      * ajaxexception
2412
 
2413
Event triggering and event handlers:
2414
    * All existing events and event handlers should be replaced by new
2415
      event classes and matching new event observers.
2416
    * See https://docs.moodle.org/dev/Events_API for more information.
2417
    * The following events will be entirely removed, though they can still
2418
      be captured using handlers, but they should not be used any more.
2419
      * groups_members_removed          -> \core\event\group_member_removed
2420
      * groups_groupings_groups_removed -> (no replacement)
2421
      * groups_groups_deleted           -> \core\event\group_deleted
2422
      * groups_groupings_deleted        -> \core\event\grouping_deleted
2423
    * edit_module_post_actions() does not trigger events any more.
2424
 
2425
=== 2.5.1 ===
2426
 
2427
* New get_course() function for use when obtaining the course record from database. Will
2428
  reuse existing $COURSE or $SITE globals if possible to improve performance.
2429
 
2430
=== 2.5 ===
2431
 
2432
* The database drivers (moodle_database and subclasses) aren't using anymore the ::columns property
2433
  for caching database metadata. MUC (databasemeta) is used instead. Any custom DB driver should
2434
  apply for that change.
2435
* The cron output has been changed to include time and memory usage (see cron_trace_time_and_memory()),
2436
  so any custom utility relying on the old output may require modification.
2437
* Function get_max_file_sizes now returns an option for (for example) "Course limit (500MB)" or
2438
  "Site limit (200MB)" when appropriate with the option set to 0. This function no longer returns
2439
  an option for 0 bytes. Existing code that was replacing the 0 option in the return
2440
  from this function with a more sensible message, can now use the return from this function directly.
2441
* Functions responsible for output in course/lib.php are deprecated, the code is moved to
2442
  appropriate renderers: print_section(), print_section_add_menus(), get_print_section_cm_text(),
2443
  make_editing_buttons()
2444
  See functions' phpdocs in lib/deprecatedlib.php
2445
* Function get_print_section_cm_text() is deprecated, replaced with methods in cm_info
2446
* zip_packer may create empty zip archives, there is a new option to ignore
2447
  problematic files when creating archive
2448
* The function delete_course_module was deprecated and has been replaced with
2449
  course_delete_module. The reason for this was because the function delete_course_module
2450
  only partially deletes data, so wherever it was called extra code was needed to
2451
  perform the whole deletion process. The function course_delete_module now takes care
2452
  of the whole process.
2453
* curl::setopt() does not accept constant values any more. As it never worked properly,
2454
  we decided to make the type check stricter. Now, the keys of the array pass must be a string
2455
  corresponding to the curl constant name.
2456
* Function get_users_listing now return list of users except guest and deleted users. Previously
2457
  deleted users were excluded by get_users_listing. As guest user is not expected while browsing users,
2458
  and not included in get_user function, it will not be returned by get_users_listing.
2459
* The add_* functions in course/dnduploadlib.php have been deprecated. Plugins should be using the
2460
  MODNAME_dndupload_register callback instead.
2461
* The signature of the add() method of classes implementing the parentable_part_of_admin_tree
2462
  interface (such as admin_category) has been extended. The new parameter allows the caller
2463
  to prepend the new node before an existing sibling in the admin tree.
2464
* condition_info:get_condition_user_fields($formatoptions) now accepts the optional
2465
  param $formatoptions, that will determine if the field names are processed by
2466
  format_string() with the passed options.
2467
* remove all references to $CFG->gdversion, GD PHP extension is now required
2468
* Formslib will now throw a developer warning if a PARAM_ type hasn't been set for elements which
2469
  need it. Please set PARAM_RAW explicitly if you do not want any cleaning.
2470
* Functions responsible for managing and accessing course categories are moved to class coursecat
2471
  in lib/coursecatlib.php, functions responsible for rendering courses and categories lists are
2472
  moved to course/renderer.php. The following global functions are deprecated: make_categories_list(),
2473
  category_delete_move(), category_delete_full(), move_category(), course_category_hide(),
2474
  course_category_show(), get_course_category(), create_course_category(), get_all_subcategories(),
2475
  get_child_categories(), get_categories(), print_my_moodle(), print_remote_course(),
2476
  print_remote_host(), print_whole_category_list(), print_category_info(), get_course_category_tree(),
2477
  print_courses(), print_course(), get_category_courses_array(), get_category_courses_array_recursively(),
2478
  get_courses_wmanagers()
2479
* $core_renderer->block_move_target() changed to support more verbose move-block-here descriptions.
2480
* Additional (optional) param $onlyactive has been added to get_enrolled_users, count_enrolled_users
2481
  functions to get information for only active (excluding suspended enrolments) users. Included two
2482
  helper functions extract_suspended_users, get_suspended_userids to extract suspended user information.
2483
* The core_plugin_manager class now provides two new helper methods for getting information
2484
  about known plugins: get_plugins_of_type() and get_subplugins_of_plugin().
2485
* The get_uninstall_url() method of all subclasses of \core\plugininfo\base class is now expected
2486
  to always return moodle_url. Subclasses can use the new method is_uninstall_allowed()
2487
  to control the availability of the 'Uninstall' link at the Plugins overview page (previously
2488
  they would do it by get_uninstall_url() returning null). By default, URL to a new general plugin
2489
  uninstall tool is returned. Unless the plugin type needs extra steps that can't be handled by
2490
  plugininfo_xxx::uninstall() method or xmldb_xxx_uninstall() function, this default URL should
2491
  satisfy all plugin types.
2492
 
2493
Database (DML) layer:
2494
* $DB->sql_empty() is deprecated, you have to use sql parameters with empty values instead,
2495
  please note hardcoding of empty strings in SQL queries breaks execution in Oracle database.
2496
* Indexes must not be defined on the same columns as keys, this is now reported as fatal problem.
2497
  Please note that internally we create indexes instead of foreign keys.
2498
 
2499
YUI changes:
2500
* M.util.help_icon has been deprecated. Code should be updated to use moodle-core-popuphelp
2501
  instead. To do so, remove any existing JS calls to M.util.help_icon from your PHP and ensure
2502
  that your help link is placed in a span which has the class 'helplink'.
2503
 
2504
=== 2.4 ===
2505
 
2506
* Pagelib: Numerous deprecated functions were removed as classes page_base, page_course
2507
  and page_generic_activity.
2508
* use $CFG->googlemapkey3 instead of removed $CFG->googlemapkey and migrate to Google Maps API V3
2509
* Function settings_navigation::add_course_editing_links() is completely removed
2510
* function global_navigation::format_display_course_content() is removed completely (the
2511
  functionality is moved to course format class)
2512
* in the function global_navigation::load_generic_course_sections() the argument $courseformat is
2513
  removed
2514
* New component and itemid columns in groups_members table - this allows plugin to create protected
2515
  group memberships using 'xx_yy_allow_group_member_remove' callback and there is also a new restore
2516
  callback 'xx_yy_restore_group_member()'.
2517
* New general role assignment restore plugin callback 'xx_yy_restore_role_assignment()'.
2518
* functions get_generic_section_name(), get_all_sections(), add_mod_to_section(), get_all_mods()
2519
  are deprecated. See their phpdocs in lib/deprecatedlib.php on how to replace them
2520
 
2521
YUI changes:
2522
* moodle-enrol-notification has been renamed to moodle-core-notification
2523
* YUI2 code must now use 2in3, see http://yuilibrary.com/yui/docs/yui/yui-yui2.html
2524
* M.util.init_select_autosubmit() and M.util.init_url_select() have been deprecated. Code using this should be updated
2525
  to use moodle-core-formautosubmit
2526
 
2527
Unit testing changes:
2528
* output debugging() is not sent to standard output any more,
2529
  use $this->assertDebuggingCalled(), $this->assertDebuggingNotCalled(),
2530
  $this->getDebuggingMessages() or $this->assertResetDebugging() instead.
2531
 
2532
=== 2.3 ===
2533
 
2534
Database layer changes:
2535
* objects are not allowed in paramters of DML functions, use explicit casting to strings if necessary
2536
 
2537
Note:
2538
* DDL and DML methods which were deprecated in 2.0 have now been removed, they will no longer produce
2539
debug messages and will produce fatal errors
2540
 
2541
API changes:
2542
 
2543
* send_stored_file() has changed its interface
2544
* deleted several resourcelib_embed_* functions from resourcelib.php
2545
 
2546
=== 2.2 ===
2547
 
2548
removed unused libraries:
2549
* odbc, base32, CodeSniffer, overlib, apd profiling, kses, Smarty, PEAR Console, swfobject, cssshover.htc, md5.js
2550
 
2551
API changes:
2552
* new admin/tool plugin type
2553
* new context API - old API is still available
2554
* deleted users do not have context any more
2555
* removed global search
2556
 
2557
 
2558
=== 2.1 ===
2559
 
2560
API changes:
2561
* basic suport for restore from 1.9
2562
* new mobile devices API
2563
* new questions API
2564
 
2565
 
2566
=== 2.0 ===
2567
 
2568
API changes:
2569
* new DML API - https://moodledev.io/docs/apis/core/dml
2570
* new DDL API - https://moodledev.io/docs/apis/core/dml/ddl
2571
* new file API - https://moodledev.io/docs/apis/subsystems/files
2572
* new $PAGE and $OUTPUT API
2573
* new navigation API
2574
* new theme API
2575
* new javascript API - https://moodledev.io/docs/guides/javascript
2576
* new portfolio API
2577
* new local plugin type
2578
* new translation support - http://lang.moodle.org
2579
* new web service API
2580
* new cohorts API
2581
* new messaging API
2582
* new rating API
2583
* new comment API
2584
* new sessions API
2585
* new enrolment API
2586
* new backup/restore API
2587
* new blocks API
2588
* new filters API
2589
* improved plugin support (aka Frankenstyle)
2590
* new registration and hub API
2591
* new course completion API
2592
* new plagiarism API
2593
* changed blog API
2594
* new text editor API
2595
* new my moodle and profiles API