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Developer Documentation

See Release Notes

  • Bug fixes for general core bugs in 3.11.x will end 14 Nov 2022 (12 months plus 6 months extension).
  • Bug fixes for security issues in 3.11.x will end 13 Nov 2023 (18 months plus 12 months extension).
  • PHP version: minimum PHP 7.3.0 Note: minimum PHP version has increased since Moodle 3.10. PHP 7.4.x is supported too.
<?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/>.

/**
 * This file is used to display and organise forum subscribers
 *
 * @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");
require_once("lib.php");

$id    = required_param('id',PARAM_INT);           // forum
$group = optional_param('group',0,PARAM_INT);      // change of group
$edit  = optional_param('edit',-1,PARAM_BOOL);     // Turn editing on and off

$url = new moodle_url('/mod/forum/subscribers.php', array('id'=>$id));
if ($group !== 0) {
    $url->param('group', $group);
}
< if ($edit !== 0) { < $url->param('edit', $edit);
> > if ($edit === 1) { > $url->param('edit', 'on'); > } else { > $url->param('edit', 'off');
}
>
$PAGE->set_url($url); $forum = $DB->get_record('forum', array('id'=>$id), '*', MUST_EXIST); $course = $DB->get_record('course', array('id'=>$forum->course), '*', MUST_EXIST); if (! $cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) { $cm->id = 0; } require_login($course, false, $cm); $context = context_module::instance($cm->id); if (!has_capability('mod/forum:viewsubscribers', $context)) {
< print_error('nopermissiontosubscribe', 'forum');
> throw new \moodle_exception('nopermissiontosubscribe', 'forum');
} unset($SESSION->fromdiscussion); $params = array( 'context' => $context, 'other' => array('forumid' => $forum->id), ); $event = \mod_forum\event\subscribers_viewed::create($params); $event->trigger(); $forumoutput = $PAGE->get_renderer('mod_forum'); $currentgroup = groups_get_activity_group($cm); $options = array('forumid'=>$forum->id, 'currentgroup'=>$currentgroup, 'context'=>$context); $existingselector = new mod_forum_existing_subscriber_selector('existingsubscribers', $options); $subscriberselector = new mod_forum_potential_subscriber_selector('potentialsubscribers', $options); $subscriberselector->set_existing_subscribers($existingselector->find_users('')); if (data_submitted()) { require_sesskey(); $subscribe = (bool)optional_param('subscribe', false, PARAM_RAW); $unsubscribe = (bool)optional_param('unsubscribe', false, PARAM_RAW); /** It has to be one or the other, not both or neither */ if (!($subscribe xor $unsubscribe)) {
< print_error('invalidaction');
> throw new \moodle_exception('invalidaction');
} if ($subscribe) { $users = $subscriberselector->get_selected_users(); foreach ($users as $user) { if (!\mod_forum\subscriptions::subscribe_user($user->id, $forum)) {
< print_error('cannotaddsubscriber', 'forum', '', $user->id);
> throw new \moodle_exception('cannotaddsubscriber', 'forum', '', $user->id);
} } } else if ($unsubscribe) { $users = $existingselector->get_selected_users(); foreach ($users as $user) { if (!\mod_forum\subscriptions::unsubscribe_user($user->id, $forum)) {
< print_error('cannotremovesubscriber', 'forum', '', $user->id);
> throw new \moodle_exception('cannotremovesubscriber', 'forum', '', $user->id);
} } } $subscriberselector->invalidate_selected_users(); $existingselector->invalidate_selected_users(); $subscriberselector->set_existing_subscribers($existingselector->find_users('')); } $strsubscribers = get_string("subscribers", "forum");
< $PAGE->navbar->add($strsubscribers);
> $PAGE->navbar->add($strsubscribers, $url);
$PAGE->set_title($strsubscribers); $PAGE->set_heading($COURSE->fullname);
< if (has_capability('mod/forum:managesubscriptions', $context) && \mod_forum\subscriptions::is_forcesubscribed($forum) === false) { < if ($edit != -1) { < $USER->subscriptionsediting = $edit; < } < $updatesubscriptionsbutton = forum_update_subscriptions_button($course->id, $id); < } else { < $updatesubscriptionsbutton = ''; < unset($USER->subscriptionsediting); < }
> > // Activate the secondary nav tab. > $PAGE->set_secondary_active_tab("forumsubscriptions"); > > // Output starts from here. > $actionbar = new \mod_forum\output\subscription_actionbar($id, $url, $forum, $edit); > $PAGE->activityheader->disable();
echo $OUTPUT->header();
> if (!$PAGE->has_secondary_navigation()) {
echo $OUTPUT->heading(get_string('forum', 'forum').' '.$strsubscribers);
< if (!empty($updatesubscriptionsbutton)) { < echo \html_writer::div($updatesubscriptionsbutton, 'float-right');
}
< if (empty($USER->subscriptionsediting)) {
> echo $forumoutput->subscription_actionbar($actionbar); > > if ($edit === 1 && !\mod_forum\subscriptions::is_forcesubscribed($forum)) { > echo $OUTPUT->heading(get_string('managesubscriptionson', 'forum'), 2); > echo $forumoutput->subscriber_selection_form($existingselector, $subscriberselector); > } else {
$subscribers = \mod_forum\subscriptions::fetch_subscribed_users($forum, $currentgroup, $context); if (\mod_forum\subscriptions::is_forcesubscribed($forum)) { $subscribers = mod_forum_filter_hidden_users($cm, $context, $subscribers); } echo $forumoutput->subscriber_overview($subscribers, $forum, $course);
< } else { < echo $forumoutput->subscriber_selection_form($existingselector, $subscriberselector); < } < if (!empty($updatesubscriptionsbutton)) { < echo $updatesubscriptionsbutton;
}
>
echo $OUTPUT->footer(); /** * Filters a list of users for whether they can see a given activity. * If the course module is hidden (closed-eye icon), then only users who have * the permission to view hidden activities will appear in the output list. * * @todo MDL-48625 This filtering should be handled in core libraries instead. * * @param stdClass $cm the course module record of the activity. * @param context_module $context the activity context, to save re-fetching it. * @param array $users the list of users to filter. * @return array the filtered list of users. */ function mod_forum_filter_hidden_users(stdClass $cm, context_module $context, array $users) { if ($cm->visible) { return $users; } else { // Filter for users that can view hidden activities. $filteredusers = array(); $hiddenviewers = get_users_by_capability($context, 'moodle/course:viewhiddenactivities'); foreach ($hiddenviewers as $hiddenviewer) { if (array_key_exists($hiddenviewer->id, $users)) { $filteredusers[$hiddenviewer->id] = $users[$hiddenviewer->id]; } } return $filteredusers; } }