| 1 |
efrain |
1 |
This files describes API changes in /dataformat/ download system,
|
|
|
2 |
information provided here is intended especially for developers.
|
|
|
3 |
|
|
|
4 |
=== 3.11.1 ===
|
|
|
5 |
* Optional $callback for the following \core\dataformat methods now receive a second argument to define
|
|
|
6 |
whether the current format writer supports HTML:
|
|
|
7 |
- download_data()
|
|
|
8 |
- write_data()
|
|
|
9 |
- write_data_to_filearea()
|
|
|
10 |
|
|
|
11 |
=== 3.9 ===
|
|
|
12 |
* The following methods have been added to the base dataformat class to allow instances to export to a local
|
|
|
13 |
file. They can be overridden in extending classes to define how files should be created:
|
|
|
14 |
- start_output_to_file()
|
|
|
15 |
- close_output_to_file()
|
|
|
16 |
* Calls to the following dataformat plugin methods have been removed:
|
|
|
17 |
- write_header()
|
|
|
18 |
- write_footer()
|
|
|
19 |
* The following methods have been added to the base class to allow instances to define support for exporting
|
|
|
20 |
HTML content, with additional support for defining how images should be embedded:
|
|
|
21 |
- supports_html()
|
|
|
22 |
- export_html_image_source()
|
|
|
23 |
* Dataformat writers should also call the following method to ensure data is properly formatted before being
|
|
|
24 |
written, which takes into account prior methods defining support for HTML:
|
|
|
25 |
- format_record()
|
|
|
26 |
|
|
|
27 |
=== 3.4 ===
|
|
|
28 |
* In order to allow multiple sheets in an exported file the functions write_header() and write_footer() have
|
|
|
29 |
been removed from core dataformat plugins and have been replaced.
|
|
|
30 |
- write_header() has been replaced with the two functions start_output() and start_sheet().
|
|
|
31 |
- write_footer() has been replaced with the two functions close_output() and close_sheet().
|
|
|
32 |
For backwards compatibility write_header() and write_footer() will continue to work but if used will
|
|
|
33 |
trigger the function error_log().
|
|
|
34 |
|
|
|
35 |
=== 3.1 ===
|
|
|
36 |
* Added new plugin system with low memory support for csv, ods, xls and json
|