Proyectos de Subversion Moodle

<?php

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * Displays a post, and all the posts below it.

 * If no post is given, displays all posts in a discussion

 *

 * @package   mod_forum

 * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}

 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

require_once('../../config.php');

$d      = required_param('d', PARAM_INT);                // Discussion ID

$parent = optional_param('parent', 0, PARAM_INT);        // If set, then display this post and all children.

$mode   = optional_param('mode', 0, PARAM_INT);          // If set, changes the layout of the thread

$move   = optional_param('move', 0, PARAM_INT);          // If set, moves this discussion to another forum

$mark   = optional_param('mark', '', PARAM_ALPHA);       // Used for tracking read posts if user initiated.

$postid = optional_param('postid', 0, PARAM_INT);        // Used for tracking read posts if user initiated.

$pin    = optional_param('pin', -1, PARAM_INT);          // If set, pin or unpin this discussion.

$url = new moodle_url('/mod/forum/discuss.php', array('d'=>$d));

if ($parent !== 0) {

    $url->param('parent', $parent);

}

$PAGE->set_url($url);

$vaultfactory = mod_forum\local\container::get_vault_factory();

$discussionvault = $vaultfactory->get_discussion_vault();

$discussion = $discussionvault->get_from_id($d);

if (!$discussion) {

    throw new \moodle_exception('errordiscussionnotfound', 'mod_forum');

}

$forumvault = $vaultfactory->get_forum_vault();

$forum = $forumvault->get_from_id($discussion->get_forum_id());

if (!$forum) {

    throw new \moodle_exception('errorforumnotfound', 'mod_forum');

}

$course = $forum->get_course_record();

$cm = $forum->get_course_module_record();

require_course_login($course, true, $cm);

$managerfactory = mod_forum\local\container::get_manager_factory();

$capabilitymanager = $managerfactory->get_capability_manager($forum);

$urlfactory = mod_forum\local\container::get_url_factory();

// Make sure we can render.

if (!$capabilitymanager->can_view_discussions($USER)) {

    throw new moodle_exception('noviewdiscussionspermission', 'mod_forum');

}

$datamapperfactory = mod_forum\local\container::get_legacy_data_mapper_factory();

$forumdatamapper = $datamapperfactory->get_forum_data_mapper();

$forumrecord = $forumdatamapper->to_legacy_object($forum);

$discussiondatamapper = $datamapperfactory->get_discussion_data_mapper();

$discussionrecord = $discussiondatamapper->to_legacy_object($discussion);

$discussionviewurl = $urlfactory->get_discussion_view_url_from_discussion($discussion);

// Set the activity record, to avoid additional calls to the db if the page getter is called.

$PAGE->set_activity_record($forumrecord);

// move this down fix for MDL-6926

require_once($CFG->dirroot . '/mod/forum/lib.php');

$modcontext = $forum->get_context();

if (

    !empty($CFG->enablerssfeeds) &&

    !empty($CFG->forum_enablerssfeeds) &&

    $forum->get_rss_type() &&

    $forum->get_rss_articles()

) {

    require_once("$CFG->libdir/rsslib.php");

    $rsstitle = format_string(

        $course->shortname,

        true,

        ['context' => context_course::instance($course->id)]

    );

    $rsstitle .= ': ' . format_string($forum->get_name());

    rss_add_http_header($modcontext, 'mod_forum', $forumrecord, $rsstitle);

}

// Move discussion if requested.

if ($move > 0 && confirm_sesskey()) {

    $forumid = $forum->get_id();

    $discussionid = $discussion->get_id();

    $return = $discussionviewurl->out(false);

    if (!$forumto = $DB->get_record('forum', ['id' => $move])) {

        throw new \moodle_exception('cannotmovetonotexist', 'forum', $return);

    }

    if (!$capabilitymanager->can_move_discussions($USER)) {

        if ($forum->get_type() == 'single') {

            throw new \moodle_exception('cannotmovefromsingleforum', 'forum', $return);

        } else {

            throw new \moodle_exception('nopermissions', 'error', $return, get_capability_string('mod/forum:movediscussions'));

        }

    }

    if ($forumto->type == 'single') {

        throw new \moodle_exception('cannotmovetosingleforum', 'forum', $return);

    }

    // Get target forum cm and check it is visible to current user.

    $modinfo = get_fast_modinfo($course);

    $forums = $modinfo->get_instances_of('forum');

    if (!array_key_exists($forumto->id, $forums)) {

        throw new \moodle_exception('cannotmovetonotfound', 'forum', $return);

    }

    $cmto = $forums[$forumto->id];

    if (!$cmto->uservisible) {

        throw new \moodle_exception('cannotmovenotvisible', 'forum', $return);

    }

    $destinationctx = context_module::instance($cmto->id);

    require_capability('mod/forum:startdiscussion', $destinationctx);

    if (!forum_move_attachments($discussionrecord, $forumid, $forumto->id)) {

        echo $OUTPUT->notification("Errors occurred while moving attachment directories - check your file permissions");

    }

    // For each subscribed user in this forum and discussion, copy over per-discussion subscriptions if required.

    $discussiongroup = $discussion->get_group_id() == -1 ? 0 : $discussion->get_group_id();

    $potentialsubscribers = \mod_forum\subscriptions::fetch_subscribed_users(

        $forumrecord,

        $discussiongroup,

        $modcontext,

        'u.id',

        true

    );

    // Pre-seed the subscribed_discussion caches.

    // Firstly for the forum being moved to.

    \mod_forum\subscriptions::fill_subscription_cache($forumto->id);

    // And also for the discussion being moved.

    \mod_forum\subscriptions::fill_subscription_cache($forumid);

    $subscriptionchanges = [];

    $subscriptiontime = time();

    foreach ($potentialsubscribers as $subuser) {

        $userid = $subuser->id;

        $targetsubscription = \mod_forum\subscriptions::is_subscribed($userid, $forumto, null, $cmto);

        $discussionsubscribed = \mod_forum\subscriptions::is_subscribed($userid, $forumrecord, $discussionid);

        $forumsubscribed = \mod_forum\subscriptions::is_subscribed($userid, $forumrecord);

        if ($forumsubscribed && !$discussionsubscribed && $targetsubscription) {

            // The user has opted out of this discussion and the move would cause them to receive notifications again.

            // Ensure they are unsubscribed from the discussion still.

            $subscriptionchanges[$userid] = \mod_forum\subscriptions::FORUM_DISCUSSION_UNSUBSCRIBED;

        } else if (!$forumsubscribed && $discussionsubscribed && !$targetsubscription) {

            // The user has opted into this discussion and would otherwise not receive the subscription after the move.

            // Ensure they are subscribed to the discussion still.

            $subscriptionchanges[$userid] = $subscriptiontime;

        }

    }

    $DB->set_field('forum_discussions', 'forum', $forumto->id, ['id' => $discussionid]);

    $DB->set_field('forum_read', 'forumid', $forumto->id, ['discussionid' => $discussionid]);

    // Delete the existing per-discussion subscriptions and replace them with the newly calculated ones.

    $DB->delete_records('forum_discussion_subs', ['discussion' => $discussionid]);

    $newdiscussion = clone $discussionrecord;

    $newdiscussion->forum = $forumto->id;

    foreach ($subscriptionchanges as $userid => $preference) {

        if ($preference != \mod_forum\subscriptions::FORUM_DISCUSSION_UNSUBSCRIBED) {

            // Users must have viewdiscussion to a discussion.

            if (has_capability('mod/forum:viewdiscussion', $destinationctx, $userid)) {

                \mod_forum\subscriptions::subscribe_user_to_discussion($userid, $newdiscussion, $destinationctx);

            }

        } else {

            \mod_forum\subscriptions::unsubscribe_user_from_discussion($userid, $newdiscussion, $destinationctx);

        }

    }

    $params = [

        'context' => $destinationctx,

        'objectid' => $discussionid,

        'other' => [

            'fromforumid' => $forumid,

            'toforumid' => $forumto->id,

        ]

    ];

    $event = \mod_forum\event\discussion_moved::create($params);

    $event->add_record_snapshot('forum_discussions', $discussionrecord);

    $event->add_record_snapshot('forum', $forumrecord);

    $event->add_record_snapshot('forum', $forumto);

    $event->trigger();

    // Delete the RSS files for the 2 forums to force regeneration of the feeds

    require_once($CFG->dirroot . '/mod/forum/rsslib.php');

    forum_rss_delete_file($forumrecord);

    forum_rss_delete_file($forumto);

    redirect($return . '&move=-1&sesskey=' . sesskey());

}

// Pin or unpin discussion if requested.

if ($pin !== -1 && confirm_sesskey()) {

    if (!$capabilitymanager->can_pin_discussions($USER)) {

        throw new \moodle_exception('nopermissions', 'error', $return, get_capability_string('mod/forum:pindiscussions'));

    }

    $params = ['context' => $modcontext, 'objectid' => $discussion->get_id(), 'other' => ['forumid' => $forum->get_id()]];

    switch ($pin) {

        case FORUM_DISCUSSION_PINNED:

            // Pin the discussion and trigger discussion pinned event.

            forum_discussion_pin($modcontext, $forumrecord, $discussionrecord);

            break;

        case FORUM_DISCUSSION_UNPINNED:

            // Unpin the discussion and trigger discussion unpinned event.

            forum_discussion_unpin($modcontext, $forumrecord, $discussionrecord);

            break;

        default:

            echo $OUTPUT->notification("Invalid value when attempting to pin/unpin discussion");

            break;

    }

    redirect($discussionviewurl->out(false));

}

// Trigger discussion viewed event.

forum_discussion_view($modcontext, $forumrecord, $discussionrecord);

unset($SESSION->fromdiscussion);

$saveddisplaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);

if ($mode) {

    $displaymode = $mode;

} else {

    $displaymode = $saveddisplaymode;

}

if (get_user_preferences('forum_useexperimentalui', false)) {

    if ($displaymode == FORUM_MODE_NESTED) {

        $displaymode = FORUM_MODE_NESTED_V2;

    }

} else {

    if ($displaymode == FORUM_MODE_NESTED_V2) {

        $displaymode = FORUM_MODE_NESTED;

    }

}

if ($displaymode != $saveddisplaymode) {

    set_user_preference('forum_displaymode', $displaymode);

}

if ($parent) {

    // If flat AND parent, then force nested display this time

    if ($displaymode == FORUM_MODE_FLATOLDEST or $displaymode == FORUM_MODE_FLATNEWEST) {

        $displaymode = FORUM_MODE_NESTED;

    }

} else {

    $parent = $discussion->get_first_post_id();

}

$postvault = $vaultfactory->get_post_vault();

if (!$post = $postvault->get_from_id($parent)) {

    throw new \moodle_exception("notexists", 'forum', "$CFG->wwwroot/mod/forum/view.php?f={$forum->get_id()}");

}

if (!$capabilitymanager->can_view_post($USER, $discussion, $post)) {

    throw new \moodle_exception('noviewdiscussionspermission', 'forum', "$CFG->wwwroot/mod/forum/view.php?id={$forum->get_id()}");

}

$istracked = forum_tp_is_tracked($forumrecord, $USER);

if ($mark == 'read'|| $mark == 'unread') {

    if ($CFG->forum_usermarksread && forum_tp_can_track_forums($forumrecord) && $istracked) {

        if ($mark == 'read') {

            forum_tp_add_read_record($USER->id, $postid);

        } else {

            // unread

            forum_tp_delete_read_records($USER->id, $postid);

        }

    }

}

$searchform = forum_search_form($course);

$forumnode = $PAGE->navigation->find($cm->id, navigation_node::TYPE_ACTIVITY);

if (empty($forumnode)) {

    $forumnode = $PAGE->navbar;

} else {

    $forumnode->make_active();

}

$node = $forumnode->add(format_string($discussion->get_name()), $discussionviewurl);

$node->display = false;

if ($node && $post->get_id() != $discussion->get_first_post_id()) {

    $node->add(format_string($post->get_subject()), $PAGE->url);

}

$isnestedv2displaymode = $displaymode == FORUM_MODE_NESTED_V2;

$PAGE->set_title("$course->shortname: " . format_string($discussion->get_name()));

$PAGE->set_heading($course->fullname);

$PAGE->set_secondary_active_tab('modulepage');

$PAGE->activityheader->disable();

if ($isnestedv2displaymode) {

    $PAGE->add_body_class('nested-v2-display-mode reset-style');

    $settingstrigger = $OUTPUT->render_from_template('mod_forum/settings_drawer_trigger', null);

    $PAGE->add_header_action($settingstrigger);

} else {

    $PAGE->add_header_action(forum_search_form($course));

}

echo $OUTPUT->header();

if (!$isnestedv2displaymode) {

    if (!$PAGE->has_secondary_navigation()) {

        echo $OUTPUT->heading(format_string($forum->get_name()), 2);

    }

    echo $OUTPUT->heading(format_string($discussion->get_name()), 3, 'discussionname');

}

$rendererfactory = mod_forum\local\container::get_renderer_factory();

$discussionrenderer = $rendererfactory->get_discussion_renderer($forum, $discussion, $displaymode);

$orderpostsby = $displaymode == FORUM_MODE_FLATNEWEST ? 'created DESC' : 'created ASC';

$replies = $postvault->get_replies_to_post($USER, $post, $capabilitymanager->can_view_any_private_reply($USER), $orderpostsby);

if ($move == -1 and confirm_sesskey()) {

    $forumname = format_string($forum->get_name(), true);

    echo $OUTPUT->notification(get_string('discussionmoved', 'forum', $forumname), 'notifysuccess');

}

echo $discussionrenderer->render($USER, $post, $replies);

echo $OUTPUT->footer();

if ($istracked && !$CFG->forum_usermarksread) {

    if ($displaymode == FORUM_MODE_THREADED) {

        forum_tp_add_read_record($USER->id, $post->get_id());

    } else {

        $postids = array_map(function($post) {

            return $post->get_id();

        }, array_merge([$post], array_values($replies)));

        forum_tp_mark_posts_read($USER, $postids);

    }

}