$forum = $forums[$forumid];
$modcontext = context_module::instance($cm->id);
$cansub = false;
if (has_capability('mod/forum:viewdiscussion', $modcontext)) {
$cansub = true;
}
if ($cansub && $cm->visible == 0 && !has_capability('mod/forum:managesubscriptions', $modcontext)) {
$cansub = false;
}
if (!forum_is_forcesubscribed($forum)) {
$subscribed = forum_is_subscribed($USER->id, $forum);
if ((has_capability('moodle/course:manageactivities', $coursecontext, $USER->id) || $forum->forcesubscribe != FORUM_DISALLOWSUBSCRIBE) && $subscribe && !$subscribed && $cansub) {
forum_subscribe($USER->id, $forumid, $modcontext);
} else {
if (!$subscribe && $subscribed) {
forum_unsubscribe($USER->id, $forumid, $modcontext);
}
}
}
}
$returnto = forum_go_back_to("index.php?id={$course->id}");
$shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
if ($subscribe) {
redirect($returnto, get_string('nowallsubscribed', 'forum', $shortname), 1);
} else {
redirect($returnto, get_string('nowallunsubscribed', 'forum', $shortname), 1);
}
}
/// First, let's process the general forums and build up a display
if ($generalforums) {
foreach ($generalforums as $forum) {
/**
* Given a new post, subscribes or unsubscribes as appropriate.
* Returns some text which describes what happened.
*
* @global objec
* @param object $post
* @param object $forum
*/
function forum_post_subscription($post, $forum) {
global $USER;
$action = '';
$subscribed = forum_is_subscribed($USER->id, $forum);
if ($forum->forcesubscribe == FORUM_FORCESUBSCRIBE) { // database ignored
return "";
} elseif (($forum->forcesubscribe == FORUM_DISALLOWSUBSCRIBE)
&& !has_capability('moodle/course:manageactivities', context_course::instance($forum->course), $USER->id)) {
if ($subscribed) {
$action = 'unsubscribe'; // sanity check, following MDL-14558
} else {
return "";
}
} else { // go with the user's choice
if (isset($post->subscribe)) {
// no change
if ((!empty($post->subscribe) && $subscribed)
|| (empty($post->subscribe) && !$subscribed)) {
return "";
} elseif (!empty($post->subscribe) && !$subscribed) {
$action = 'subscribe';
} elseif (empty($post->subscribe) && $subscribed) {
$action = 'unsubscribe';
}
}
}
$info = new stdClass();
$info->name = fullname($USER);
$info->forum = format_string($forum->name);
switch ($action) {
case 'subscribe':
forum_subscribe($USER->id, $post->forum);
return "<p>".get_string("nowsubscribed", "forum", $info)."</p>";
case 'unsubscribe':
forum_unsubscribe($USER->id, $post->forum);
return "<p>".get_string("nownotsubscribed", "forum", $info)."</p>";
}
}
}
break;
}
}
}
/// Do course wide subscribe/unsubscribe
if (!is_null($subscribe) && !isguest()) {
$allforums = array_merge($generalforums, $learningforums);
if ($allforums) {
foreach ($allforums as $forum) {
if (!forum_is_forcesubscribed($forum->id)) {
$subscribed = forum_is_subscribed($USER->id, $forum->id);
if ($subscribe && !$subscribed) {
forum_subscribe($USER->id, $forum->id);
} elseif (!$subscribe && $subscribed) {
forum_unsubscribe($USER->id, $forum->id);
}
}
}
}
$returnto = forum_go_back_to("index.php?id={$course->id}");
if ($subscribe) {
add_to_log($course->id, "forum", "subscribeall", "index.php?id={$course->id}", $course->id);
redirect($returnto, get_string("nowallsubscribed", "forum", format_string($course->shortname)), 1);
} else {
add_to_log($course->id, "forum", "unsubscribeall", "index.php?id={$course->id}", $course->id);
redirect($returnto, get_string("nowallunsubscribed", "forum", format_string($course->shortname)), 1);
}
}
/// First, let's process the general forums and build up a display
if ($generalforums) {
/**
* Remove subscriptions for a user in a context
*
* @global object
* @global object
* @uses CONTEXT_SYSTEM
* @uses CONTEXT_COURSECAT
* @uses CONTEXT_COURSE
* @uses CONTEXT_MODULE
* @param int $userid
* @param object $context
* @return bool
*/
function forum_remove_user_subscriptions($userid, $context) {
global $CFG, $DB;
if (empty($context->contextlevel)) {
return false;
}
switch ($context->contextlevel) {
case CONTEXT_SYSTEM: // For the whole site
// find all courses in which this user has a forum subscription
if ($courses = $DB->get_records_sql("SELECT c.id
FROM {course} c,
{forum_subscriptions} fs,
{forum} f
WHERE c.id = f.course AND f.id = fs.forum AND fs.userid = ?
GROUP BY c.id", array($userid))) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSECAT: // For a whole category
if ($courses = $DB->get_records('course', array('category' => $context->instanceid), '', 'id')) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
if ($categories = $DB->get_records('course_categories', array('parent' => $context->instanceid), '', 'id')) {
foreach ($categories as $category) {
$subcontext = get_context_instance(CONTEXT_COURSECAT, $category->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSE: // For a whole course
if (!is_enrolled($context, $userid)) {
if ($course = $DB->get_record('course', array('id' => $context->instanceid), 'id')) {
// find all forums in which this user has a subscription, and its coursemodule id
if ($forums = $DB->get_records_sql("SELECT f.id, cm.id as coursemodule
FROM {forum} f,
{modules} m,
{course_modules} cm,
{forum_subscriptions} fs
WHERE fs.userid = ? AND f.course = ?
AND fs.forum = f.id AND cm.instance = f.id
AND cm.module = m.id AND m.name = 'forum'", array($userid, $context->instanceid))) {
foreach ($forums as $forum) {
if ($modcontext = get_context_instance(CONTEXT_MODULE, $forum->coursemodule)) {
if (!has_capability('mod/forum:viewdiscussion', $modcontext, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
}
}
}
break;
case CONTEXT_MODULE: // Just one forum
if (!is_enrolled($context, $userid)) {
if ($cm = get_coursemodule_from_id('forum', $context->instanceid)) {
if ($forum = $DB->get_record('forum', array('id' => $cm->instance))) {
if (!has_capability('mod/forum:viewdiscussion', $context, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
}
break;
}
return true;
}
if ($force and has_capability('mod/forum:managesubscriptions', $context)) {
if (forum_is_forcesubscribed($forum)) {
forum_forcesubscribe($forum->id, 0);
redirect($returnto, get_string("everyonecannowchoose", "forum"), 1);
} else {
forum_forcesubscribe($forum->id, 1);
redirect($returnto, get_string("everyoneisnowsubscribed", "forum"), 1);
}
}
if (forum_is_forcesubscribed($forum)) {
redirect($returnto, get_string("everyoneisnowsubscribed", "forum"), 1);
}
$info->name = fullname($user);
$info->forum = format_string($forum->name);
if (forum_is_subscribed($user->id, $forum->id)) {
if (forum_unsubscribe($user->id, $forum->id)) {
add_to_log($course->id, "forum", "unsubscribe", "view.php?f={$forum->id}", $forum->id, $cm->id);
redirect($returnto, get_string("nownotsubscribed", "forum", $info), 1);
} else {
print_error('cannotunsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
}
} else {
// subscribe
if ($forum->forcesubscribe == FORUM_DISALLOWSUBSCRIBE && !has_capability('mod/forum:managesubscriptions', $context)) {
print_error('disallowsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
}
if (!has_capability('mod/forum:viewdiscussion', $context)) {
print_error('cannotsubscribe', 'forum', $_SERVER["HTTP_REFERER"]);
}
if (forum_subscribe($user->id, $forum->id)) {
add_to_log($course->id, "forum", "subscribe", "view.php?f={$forum->id}", $forum->id, $cm->id);
$strshowall = get_string("showall");
$strsubscribers = get_string("subscribers", "forum");
$strforums = get_string("forums", "forum");
$searchtext = optional_param('searchtext', '', PARAM_RAW);
if ($frm = data_submitted()) {
/// A form was submitted so process the input
if (!empty($frm->add) and !empty($frm->addselect)) {
foreach ($frm->addselect as $addsubscriber) {
if (!forum_subscribe($addsubscriber, $id)) {
print_error('cannotaddsubscriber', 'forum', '', $addsubscriber);
}
}
} else {
if (!empty($frm->remove) and !empty($frm->removeselect)) {
foreach ($frm->removeselect as $removesubscriber) {
if (!forum_unsubscribe($removesubscriber, $id)) {
print_error('cannotremovesubscriber', 'forum', '', $removesubscriber);
}
}
} else {
if (!empty($frm->showall)) {
$searchtext = '';
}
}
}
}
/// Get all existing subscribers for this forum.
if (!($subscribers = forum_subscribed_users($course, $forum, $currentgroup, $context))) {
$subscribers = array();
}
/// Get all the potential subscribers excluding users already subscribed
/**
* Test that toggling the forum-level subscription for a different user does not affect their discussion-level
* subscriptions.
*/
public function test_forum_subscribe_toggle_as_other()
{
global $DB;
$this->resetAfterTest(true);
// Create a course, with a forum.
$course = $this->getDataGenerator()->create_course();
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_CHOOSESUBSCRIBE);
$forum = $this->getDataGenerator()->create_module('forum', $options);
// Create a user enrolled in the course as a student.
list($author) = $this->helper_create_users($course, 1);
// Post a discussion to the forum.
list($discussion, $post) = $this->helper_post_to_forum($forum, $author);
// Check that the user is currently not subscribed to the forum.
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($author->id, $forum));
// Check the deprecated function too.
$this->assertFalse(forum_is_subscribed($author->id, $forum));
$this->assertEquals(1, count(phpunit_util::get_debugging_messages()));
phpunit_util::reset_debugging();
// Check that the user is unsubscribed from the discussion too.
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($author->id, $forum, $discussion->id));
// Check that we have no records in either of the subscription tables.
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Subscribing to the forum should create a record in the subscriptions table, but not the forum discussion
// subscriptions table.
\mod_forum\subscriptions::subscribe_user($author->id, $forum);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing should remove the record from the forum subscriptions table, and not modify the forum
// discussion subscriptions table.
\mod_forum\subscriptions::unsubscribe_user($author->id, $forum);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// The same thing should happen calling the deprecated versions of
// these functions.
// Subscribing to the forum should create a record in the subscriptions table, but not the forum discussion
// subscriptions table.
forum_subscribe($author->id, $forum->id);
$this->assertEquals(1, count(phpunit_util::get_debugging_messages()));
phpunit_util::reset_debugging();
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing should remove the record from the forum subscriptions table, and not modify the forum
// discussion subscriptions table.
forum_unsubscribe($author->id, $forum->id);
$this->assertEquals(1, count(phpunit_util::get_debugging_messages()));
phpunit_util::reset_debugging();
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Enroling the user in the discussion should add one record to the forum discussion table without modifying the
// form subscriptions.
\mod_forum\subscriptions::subscribe_user_to_discussion($author->id, $discussion);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing should remove the record from the forum subscriptions table, and not modify the forum
// discussion subscriptions table.
\mod_forum\subscriptions::unsubscribe_user_from_discussion($author->id, $discussion);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Re-subscribe to the discussion so that we can check the effect of forum-level subscriptions.
\mod_forum\subscriptions::subscribe_user_to_discussion($author->id, $discussion);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Subscribing to the forum should have no effect on the forum discussion subscriptions table if the user did
// not request the change themself.
\mod_forum\subscriptions::subscribe_user($author->id, $forum);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing from the forum should have no effect on the forum discussion subscriptions table if the user
// did not request the change themself.
\mod_forum\subscriptions::unsubscribe_user($author->id, $forum);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Subscribing to the forum should remove the per-discussion subscription preference if the user requested the
// change themself.
\mod_forum\subscriptions::subscribe_user($author->id, $forum, null, true);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Now unsubscribe from the current discussion whilst being subscribed to the forum as a whole.
\mod_forum\subscriptions::unsubscribe_user_from_discussion($author->id, $discussion);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing from the forum should remove the per-discussion subscription preference if the user requested the
// change themself.
\mod_forum\subscriptions::unsubscribe_user($author->id, $forum, null, true);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Subscribe to the discussion.
\mod_forum\subscriptions::subscribe_user_to_discussion($author->id, $discussion);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Subscribe to the forum without removing the discussion preferences.
\mod_forum\subscriptions::subscribe_user($author->id, $forum);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
// Unsubscribing from the discussion should result in a change.
\mod_forum\subscriptions::unsubscribe_user_from_discussion($author->id, $discussion);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $author->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $author->id, 'discussion' => $discussion->id)));
}
/**
* Remove subscriptions for a user in a context
*/
function forum_remove_user_subscriptions($userid, $context)
{
global $CFG;
if (empty($context->contextlevel)) {
return false;
}
switch ($context->contextlevel) {
case CONTEXT_SYSTEM:
// For the whole site
//if ($courses = get_my_courses($userid)) {
// find all courses in which this user has a forum subscription
if ($courses = get_records_sql("SELECT c.id\n FROM {$CFG->prefix}course c,\n {$CFG->prefix}forum_subscriptions fs,\n {$CFG->prefix}forum f\n WHERE c.id = f.course AND f.id = fs.forum AND fs.userid = {$userid}\n GROUP BY c.id")) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSECAT:
// For a whole category
if ($courses = get_records('course', 'category', $context->instanceid, '', 'id')) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
if ($categories = get_records('course_categories', 'parent', $context->instanceid, '', 'id')) {
foreach ($categories as $category) {
$subcontext = get_context_instance(CONTEXT_COURSECAT, $category->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSE:
// For a whole course
if ($course = get_record('course', 'id', $context->instanceid, '', '', '', '', 'id')) {
// find all forums in which this user has a subscription, and its coursemodule id
if ($forums = get_records_sql("SELECT f.id, cm.id as coursemodule\n FROM {$CFG->prefix}forum f,\n {$CFG->prefix}modules m,\n {$CFG->prefix}course_modules cm,\n {$CFG->prefix}forum_subscriptions fs\n WHERE fs.userid = {$userid} AND f.course = {$context->instanceid}\n AND fs.forum = f.id AND cm.instance = f.id\n AND cm.module = m.id AND m.name = 'forum'")) {
foreach ($forums as $forum) {
if ($modcontext = get_context_instance(CONTEXT_MODULE, $forum->coursemodule)) {
if (!has_capability('mod/forum:viewdiscussion', $modcontext, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
}
}
break;
case CONTEXT_MODULE:
// Just one forum
if ($cm = get_coursemodule_from_id('forum', $context->instanceid)) {
if ($forum = get_record('forum', 'id', $cm->instance)) {
if (!has_capability('mod/forum:viewdiscussion', $context, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
break;
}
return true;
}
$PAGE->set_context(context_user::instance($USER->id));
$return = $CFG->wwwroot . '/';
if (isguestuser()) {
redirect($return);
}
$strunsubscribeall = get_string('unsubscribeall', 'forum');
$PAGE->navbar->add(get_string('modulename', 'forum'));
$PAGE->navbar->add($strunsubscribeall);
$PAGE->set_title($strunsubscribeall);
$PAGE->set_heading($COURSE->fullname);
echo $OUTPUT->header();
echo $OUTPUT->heading($strunsubscribeall);
if (data_submitted() and $confirm and confirm_sesskey()) {
$forums = forum_get_optional_subscribed_forums();
foreach ($forums as $forum) {
forum_unsubscribe($USER->id, $forum->id, context_module::instance($forum->cm));
}
$DB->set_field('user', 'autosubscribe', 0, array('id' => $USER->id));
echo $OUTPUT->box(get_string('unsubscribealldone', 'forum'));
echo $OUTPUT->continue_button($return);
echo $OUTPUT->footer();
die;
} else {
$a = count(forum_get_optional_subscribed_forums());
if ($a) {
$msg = get_string('unsubscribeallconfirm', 'forum', $a);
echo $OUTPUT->confirm($msg, new moodle_url('unsubscribeall.php', array('confirm' => 1)), $return);
echo $OUTPUT->footer();
die;
} else {
echo $OUTPUT->box(get_string('unsubscribeallempty', 'forum'));
/** It has to be one or the other, not both or neither */
if (!($subscribe xor $unsubscribe)) {
print_error('invalidaction');
}
if ($subscribe) {
$users = $subscriberselector->get_selected_users();
foreach ($users as $user) {
if (!forum_subscribe($user->id, $id)) {
print_error('cannotaddsubscriber', 'forum', '', $user->id);
}
}
} else {
if ($unsubscribe) {
$users = $existingselector->get_selected_users();
foreach ($users as $user) {
if (!forum_unsubscribe($user->id, $id)) {
print_error('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);
$PAGE->set_title($strsubscribers);
$PAGE->set_heading($COURSE->fullname);
if (has_capability('mod/forum:managesubscriptions', $context)) {
$PAGE->set_button(forum_update_subscriptions_button($course->id, $id));
/**
* Remove subscriptions for a user in a context
*/
function forum_remove_user_subscriptions($userid, $context)
{
if (empty($context->contextlevel)) {
return false;
}
switch ($context->contextlevel) {
case CONTEXT_SYSTEM:
// For the whole site
if ($courses = get_records('course')) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSECAT:
// For a whole category
if ($courses = get_records('course', 'category', $context->instanceid)) {
foreach ($courses as $course) {
$subcontext = get_context_instance(CONTEXT_COURSE, $course->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
if ($categories = get_records('course_categories', 'parent', $context->instanceid)) {
foreach ($categories as $category) {
$subcontext = get_context_instance(CONTEXT_COURSECAT, $category->id);
forum_remove_user_subscriptions($userid, $subcontext);
}
}
break;
case CONTEXT_COURSE:
// For a whole course
if ($course = get_record('course', 'id', $context->instanceid)) {
if ($forums = get_all_instances_in_course('forum', $course, $userid, true)) {
foreach ($forums as $forum) {
if ($modcontext = get_context_instance(CONTEXT_MODULE, $forum->coursemodule)) {
if (!has_capability('mod/forum:viewdiscussion', $modcontext, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
}
}
break;
case CONTEXT_MODULE:
// Just one forum
if ($cm = get_coursemodule_from_id('forum', $context->instanceid)) {
if ($forum = get_record('forum', 'id', $cm->instance)) {
if (!has_capability('mod/forum:viewdiscussion', $context, $userid)) {
forum_unsubscribe($userid, $forum->id);
}
}
}
break;
}
return true;
}