/**
* Adds module specific settings to the settings block
*
* @param settings_navigation $settings The settings navigation object
* @param navigation_node $forumnode The node to add module settings to
*/
function forum_extend_settings_navigation(settings_navigation $settingsnav, navigation_node $forumnode)
{
global $USER, $PAGE, $CFG, $DB, $OUTPUT;
$forumobject = $DB->get_record("forum", array("id" => $PAGE->cm->instance));
if (empty($PAGE->cm->context)) {
$PAGE->cm->context = context_module::instance($PAGE->cm->instance);
}
// for some actions you need to be enrolled, beiing admin is not enough sometimes here
$enrolled = is_enrolled($PAGE->cm->context, $USER, '', false);
$activeenrolled = is_enrolled($PAGE->cm->context, $USER, '', true);
$canmanage = has_capability('mod/forum:managesubscriptions', $PAGE->cm->context);
$subscriptionmode = \mod_forum\subscriptions::get_subscription_mode($forumobject);
$cansubscribe = $activeenrolled && !\mod_forum\subscriptions::is_forcesubscribed($forumobject) && (!\mod_forum\subscriptions::subscription_disabled($forumobject) || $canmanage);
if ($canmanage) {
$mode = $forumnode->add(get_string('subscriptionmode', 'forum'), null, navigation_node::TYPE_CONTAINER);
$allowchoice = $mode->add(get_string('subscriptionoptional', 'forum'), new moodle_url('/mod/forum/subscribe.php', array('id' => $forumobject->id, 'mode' => FORUM_CHOOSESUBSCRIBE, 'sesskey' => sesskey())), navigation_node::TYPE_SETTING);
$forceforever = $mode->add(get_string("subscriptionforced", "forum"), new moodle_url('/mod/forum/subscribe.php', array('id' => $forumobject->id, 'mode' => FORUM_FORCESUBSCRIBE, 'sesskey' => sesskey())), navigation_node::TYPE_SETTING);
$forceinitially = $mode->add(get_string("subscriptionauto", "forum"), new moodle_url('/mod/forum/subscribe.php', array('id' => $forumobject->id, 'mode' => FORUM_INITIALSUBSCRIBE, 'sesskey' => sesskey())), navigation_node::TYPE_SETTING);
$disallowchoice = $mode->add(get_string('subscriptiondisabled', 'forum'), new moodle_url('/mod/forum/subscribe.php', array('id' => $forumobject->id, 'mode' => FORUM_DISALLOWSUBSCRIBE, 'sesskey' => sesskey())), navigation_node::TYPE_SETTING);
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE:
// 0
$allowchoice->action = null;
$allowchoice->add_class('activesetting');
break;
case FORUM_FORCESUBSCRIBE:
// 1
$forceforever->action = null;
$forceforever->add_class('activesetting');
break;
case FORUM_INITIALSUBSCRIBE:
// 2
$forceinitially->action = null;
$forceinitially->add_class('activesetting');
break;
case FORUM_DISALLOWSUBSCRIBE:
// 3
$disallowchoice->action = null;
$disallowchoice->add_class('activesetting');
break;
}
} else {
if ($activeenrolled) {
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE:
// 0
$notenode = $forumnode->add(get_string('subscriptionoptional', 'forum'));
break;
case FORUM_FORCESUBSCRIBE:
// 1
$notenode = $forumnode->add(get_string('subscriptionforced', 'forum'));
break;
case FORUM_INITIALSUBSCRIBE:
// 2
$notenode = $forumnode->add(get_string('subscriptionauto', 'forum'));
break;
case FORUM_DISALLOWSUBSCRIBE:
// 3
$notenode = $forumnode->add(get_string('subscriptiondisabled', 'forum'));
break;
}
}
}
if ($cansubscribe) {
if (\mod_forum\subscriptions::is_subscribed($USER->id, $forumobject)) {
$linktext = get_string('unsubscribe', 'forum');
} else {
$linktext = get_string('subscribe', 'forum');
}
$url = new moodle_url('/mod/forum/subscribe.php', array('id' => $forumobject->id, 'sesskey' => sesskey()));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
}
if (has_capability('mod/forum:viewsubscribers', $PAGE->cm->context)) {
$url = new moodle_url('/mod/forum/subscribers.php', array('id' => $forumobject->id));
$forumnode->add(get_string('showsubscribers', 'forum'), $url, navigation_node::TYPE_SETTING);
}
if ($enrolled && forum_tp_can_track_forums($forumobject)) {
// keep tracking info for users with suspended enrolments
if ($forumobject->trackingtype == FORUM_TRACKING_OPTIONAL || !$CFG->forum_allowforcedreadtracking && $forumobject->trackingtype == FORUM_TRACKING_FORCED) {
if (forum_tp_is_tracked($forumobject)) {
$linktext = get_string('notrackforum', 'forum');
} else {
$linktext = get_string('trackforum', 'forum');
}
$url = new moodle_url('/mod/forum/settracking.php', array('id' => $forumobject->id));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
}
}
if (!isloggedin() && $PAGE->course->id == SITEID) {
$userid = guest_user()->id;
} else {
$userid = $USER->id;
}
$hascourseaccess = $PAGE->course->id == SITEID || can_access_course($PAGE->course, $userid);
$enablerssfeeds = !empty($CFG->enablerssfeeds) && !empty($CFG->forum_enablerssfeeds);
if ($enablerssfeeds && $forumobject->rsstype && $forumobject->rssarticles && $hascourseaccess) {
if (!function_exists('rss_get_url')) {
require_once "{$CFG->libdir}/rsslib.php";
}
if ($forumobject->rsstype == 1) {
$string = get_string('rsssubscriberssdiscussions', 'forum');
} else {
$string = get_string('rsssubscriberssposts', 'forum');
}
$url = new moodle_url(rss_get_url($PAGE->cm->context->id, $userid, "mod_forum", $forumobject->id));
$forumnode->add($string, $url, settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
}
}
/**
* Test subscription using disallow subscription on create.
*/
public function test_forum_disallow_subscribe_on_create()
{
global $CFG;
$this->resetAfterTest();
$usercount = 5;
$course = $this->getDataGenerator()->create_course();
$users = array();
for ($i = 0; $i < $usercount; $i++) {
$user = $this->getDataGenerator()->create_user();
$users[] = $user;
$this->getDataGenerator()->enrol_user($user->id, $course->id);
}
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_DISALLOWSUBSCRIBE);
// Subscription prevented.
$forum = $this->getDataGenerator()->create_module('forum', $options);
$result = \mod_forum\subscriptions::fetch_subscribed_users($forum);
// No subscriptions by default.
$this->assertEquals(0, count($result));
foreach ($users as $user) {
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($user->id, $forum));
}
}
$draftid_editor = file_get_submitted_draft_itemid('message');
$currenttext = file_prepare_draft_area($draftid_editor, $modcontext->id, 'mod_forum', 'post', $postid, mod_forum_post_form::editor_options($modcontext, $postid), $post->message);
$manageactivities = has_capability('moodle/course:manageactivities', $coursecontext);
if (\mod_forum\subscriptions::subscription_disabled($forum) && !$manageactivities) {
// User does not have permission to subscribe to this discussion at all.
$discussionsubscribe = false;
} else {
if (\mod_forum\subscriptions::is_forcesubscribed($forum)) {
// User does not have permission to unsubscribe from this discussion at all.
$discussionsubscribe = true;
} else {
if (isset($discussion) && \mod_forum\subscriptions::is_subscribed($USER->id, $forum, $discussion->id, $cm)) {
// User is subscribed to the discussion - continue the subscription.
$discussionsubscribe = true;
} else {
if (!isset($discussion) && \mod_forum\subscriptions::is_subscribed($USER->id, $forum, null, $cm)) {
// Starting a new discussion, and the user is subscribed to the forum - subscribe to the discussion.
$discussionsubscribe = true;
} else {
// User is not subscribed to either forum or discussion. Follow user preference.
$discussionsubscribe = $USER->autosubscribe;
}
}
}
}
$mform_post->set_data(array('attachments' => $draftitemid, 'general' => $heading, 'subject' => $post->subject, 'message' => array('text' => $currenttext, 'format' => empty($post->messageformat) ? editors_get_preferred_format() : $post->messageformat, 'itemid' => $draftid_editor), 'discussionsubscribe' => $discussionsubscribe, 'mailnow' => !empty($post->mailnow), 'userid' => $post->userid, 'parent' => $post->parent, 'discussion' => $post->discussion, 'course' => $course->id) + $page_params + (isset($post->format) ? array('format' => $post->format) : array()) + (isset($discussion->timestart) ? array('timestart' => $discussion->timestart) : array()) + (isset($discussion->timeend) ? array('timeend' => $discussion->timeend) : array()) + (isset($post->groupid) ? array('groupid' => $post->groupid) : array()) + (isset($discussion->id) ? array('discussion' => $discussion->id) : array()));
if ($mform_post->is_cancelled()) {
if (!isset($discussion->id) || $forum->type === 'qanda') {
// Q and A forums don't have a discussion page, so treat them like a new thread..
redirect(new moodle_url('/mod/forum/view.php', array('f' => $forum->id)));
} else {
// there should not be any links leading to this place, just redirect
redirect(new moodle_url('/mod/forum/index.php', array('id' => $id)), get_string('subscribeenrolledonly', 'forum'));
}
// Can proceed now, the user is not guest and is enrolled
foreach ($modinfo->get_instances_of('forum') as $forumid => $cm) {
$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)) {
$cansub = false;
}
if (!\mod_forum\subscriptions::is_forcesubscribed($forum)) {
$subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum, null, $cm);
$canmanageactivities = has_capability('moodle/course:manageactivities', $coursecontext, $USER->id);
if (($canmanageactivities || \mod_forum\subscriptions::is_subscribable($forum)) && $subscribe && !$subscribed && $cansub) {
\mod_forum\subscriptions::subscribe_user($USER->id, $forum, $modcontext, true);
} else {
if (!$subscribe && $subscribed) {
\mod_forum\subscriptions::unsubscribe_user($USER->id, $forum, $modcontext, true);
}
}
}
}
$returnto = forum_go_back_to("index.php?id={$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 {
$heading = get_string("yourreply", "forum");
$formheading = get_string('reply', 'forum');
} else {
if ($forum->type == 'qanda') {
$heading = get_string('yournewquestion', 'forum');
} else {
$heading = get_string('yournewtopic', 'forum');
}
}
$postid = empty($post->id) ? null : $post->id;
$draftid_editor = file_get_submitted_draft_itemid('message');
$currenttext = file_prepare_draft_area($draftid_editor, $modcontext->id, 'mod_forum', 'post', $postid, mod_forum_post_form::editor_options($modcontext, $postid), $post->message);
// Respect the user's discussion autosubscribe preference unless they have already posted - in which case, use that preference.
$discussionsubscribe = $USER->autosubscribe;
if (isset($discussion) && forum_user_has_posted($forum->id, $discussion->id, $USER->id)) {
$discussionsubscribe = \mod_forum\subscriptions::is_subscribed($USER->id, $forum, $discussion->id, $cm);
}
$mform_post->set_data(array('attachments' => $draftitemid, 'general' => $heading, 'subject' => $post->subject, 'message' => array('text' => $currenttext, 'format' => empty($post->messageformat) ? editors_get_preferred_format() : $post->messageformat, 'itemid' => $draftid_editor), 'discussionsubscribe' => $discussionsubscribe, 'mailnow' => !empty($post->mailnow), 'userid' => $post->userid, 'parent' => $post->parent, 'discussion' => $post->discussion, 'course' => $course->id) + $page_params + (isset($post->format) ? array('format' => $post->format) : array()) + (isset($discussion->timestart) ? array('timestart' => $discussion->timestart) : array()) + (isset($discussion->timeend) ? array('timeend' => $discussion->timeend) : array()) + (isset($post->groupid) ? array('groupid' => $post->groupid) : array()) + (isset($discussion->id) ? array('discussion' => $discussion->id) : array()));
if ($mform_post->is_cancelled()) {
if (!isset($discussion->id) || $forum->type === 'qanda') {
// Q and A forums don't have a discussion page, so treat them like a new thread..
redirect(new moodle_url('/blocks/oc_mooc_nav/forum_view.php', array('f' => $forum->id)));
} else {
redirect(new moodle_url('/mod/forum/discuss.php', array('d' => $discussion->id)));
}
} else {
if ($fromform = $mform_post->get_data()) {
if (empty($SESSION->fromurl)) {
$errordestination = "{$CFG->wwwroot}/blocks/oc_mooc_nav/forum_view.php?f={$forum->id}";
} else {
$errordestination = $SESSION->fromurl;
/**
* Test that after toggling the forum subscription as another user,
* the discussion subscription functionality works as expected.
*/
public function test_forum_subscribe_toggle_as_other_repeat_subscriptions()
{
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', $options);
// Create a user enrolled in the course as a student.
list($user) = $this->helper_create_users($course, 1);
// Post a discussion to the forum.
list($discussion, $post) = $this->helper_post_to_forum($forum, $user);
// Confirm that the user is currently not subscribed to the forum.
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($user->id, $forum));
// Confirm that the user is unsubscribed from the discussion too.
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($user->id, $forum, $discussion->id));
// Confirm that we have no records in either of the subscription tables.
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $user->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $user->id, 'discussion' => $discussion->id)));
// Subscribing to the forum should create a record in the subscriptions table, but not the forum discussion
// subscriptions table.
\mod_forum\subscriptions::subscribe_user($user->id, $forum);
$this->assertEquals(1, $DB->count_records('forum_subscriptions', array('userid' => $user->id, 'forum' => $forum->id)));
$this->assertEquals(0, $DB->count_records('forum_discussion_subs', array('userid' => $user->id, 'discussion' => $discussion->id)));
// Now unsubscribe from the discussion. This should return true.
$this->assertTrue(\mod_forum\subscriptions::unsubscribe_user_from_discussion($user->id, $discussion));
// Attempting to unsubscribe again should return false because no change was made.
$this->assertFalse(\mod_forum\subscriptions::unsubscribe_user_from_discussion($user->id, $discussion));
// Subscribing to the discussion again should return truthfully as the subscription preference was removed.
$this->assertTrue(\mod_forum\subscriptions::subscribe_user_to_discussion($user->id, $discussion));
// Attempting to subscribe again should return false because no change was made.
$this->assertFalse(\mod_forum\subscriptions::subscribe_user_to_discussion($user->id, $discussion));
// Now unsubscribe from the discussion. This should return true once more.
$this->assertTrue(\mod_forum\subscriptions::unsubscribe_user_from_discussion($user->id, $discussion));
// And unsubscribing from the forum but not as a request from the user should maintain their preference.
\mod_forum\subscriptions::unsubscribe_user($user->id, $forum);
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $user->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $user->id, 'discussion' => $discussion->id)));
// Subscribing to the discussion should return truthfully because a change was made.
$this->assertTrue(\mod_forum\subscriptions::subscribe_user_to_discussion($user->id, $discussion));
$this->assertEquals(0, $DB->count_records('forum_subscriptions', array('userid' => $user->id, 'forum' => $forum->id)));
$this->assertEquals(1, $DB->count_records('forum_discussion_subs', array('userid' => $user->id, 'discussion' => $discussion->id)));
}
public function test_automatic_with_unsubscribed_discussion()
{
$this->resetAfterTest(true);
// Create a course, with a forum.
$course = $this->getDataGenerator()->create_course();
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_INITIALSUBSCRIBE);
$forum = $this->getDataGenerator()->create_module('forum', $options);
// Create two users enrolled in the course as students.
list($author, $recipient) = $this->helper_create_users($course, 2);
// Post a discussion to the forum.
list($discussion, $post) = $this->helper_post_to_forum($forum, $author);
// Unsubscribe the 'author' user from the discussion.
\mod_forum\subscriptions::unsubscribe_user_from_discussion($author->id, $discussion);
$this->assertFalse(\mod_forum\subscriptions::is_subscribed($author->id, $forum, $discussion->id));
$this->assertTrue(\mod_forum\subscriptions::is_subscribed($recipient->id, $forum, $discussion->id));
// We expect only one user to receive this post.
$expected = 1;
// Run cron and check that the expected number of users received the notification.
$messages = $this->helper_run_cron_check_count($post, $expected);
$seenauthor = false;
$seenrecipient = false;
foreach ($messages as $message) {
// They should both be from our user.
$this->assertEquals($author->id, $message->useridfrom);
if ($message->useridto == $author->id) {
$seenauthor = true;
} else {
if ($message->useridto = $recipient->id) {
$seenrecipient = true;
}
}
}
// Check we only saw one user.
$this->assertFalse($seenauthor);
$this->assertTrue($seenrecipient);
}
}
// For each subscribed user in this forum and discussion, copy over per-discussion subscriptions if required.
$discussiongroup = $discussion->groupid == -1 ? 0 : $discussion->groupid;
$potentialsubscribers = \mod_forum\subscriptions::fetch_subscribed_users($forum, $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($forum->id);
$subscriptionchanges = array();
$subscriptiontime = time();
foreach ($potentialsubscribers as $subuser) {
$userid = $subuser->id;
$targetsubscription = \mod_forum\subscriptions::is_subscribed($userid, $forumto, null, $cmto);
$discussionsubscribed = \mod_forum\subscriptions::is_subscribed($userid, $forum, $discussion->id);
$forumsubscribed = \mod_forum\subscriptions::is_subscribed($userid, $forum);
if ($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, array('id' => $discussion->id));
$DB->set_field('forum_read', 'forumid', $forumto->id, array('discussionid' => $discussion->id));
// Delete the existing per-discussion subscriptions and replace them with the newly calculated ones.
// Print forums only when needed.
require_once $CFG->dirroot . '/mod/forum/lib.php';
if (!($newsforum = forum_get_course_forum($SITE->id, 'news'))) {
print_error('cannotfindorcreateforum', 'forum');
}
// Fetch news forum context for proper filtering to happen.
$newsforumcm = get_coursemodule_from_instance('forum', $newsforum->id, $SITE->id, false, MUST_EXIST);
$newsforumcontext = context_module::instance($newsforumcm->id, MUST_EXIST);
$forumname = format_string($newsforum->name, true, array('context' => $newsforumcontext));
echo html_writer::tag('a', get_string('skipa', 'access', core_text::strtolower(strip_tags($forumname))), array('href' => '#skipsitenews', 'class' => 'skip-block'));
// Wraps site news forum in div container.
echo html_writer::start_tag('div', array('id' => 'site-news-forum'));
if (isloggedin()) {
$SESSION->fromdiscussion = $CFG->wwwroot;
$subtext = '';
if (\mod_forum\subscriptions::is_subscribed($USER->id, $newsforum)) {
if (!\mod_forum\subscriptions::is_forcesubscribed($newsforum)) {
$subtext = get_string('unsubscribe', 'forum');
}
} else {
$subtext = get_string('subscribe', 'forum');
}
echo $OUTPUT->heading($forumname);
$suburl = new moodle_url('/mod/forum/subscribe.php', array('id' => $newsforum->id, 'sesskey' => sesskey()));
echo html_writer::tag('div', html_writer::link($suburl, $subtext), array('class' => 'subscribelink'));
} else {
echo $OUTPUT->heading($forumname);
}
forum_print_latest_discussions($SITE, $newsforum, $SITE->newsitems, 'plain', 'p.modified DESC');
// End site news forum div container.
echo html_writer::end_tag('div');
/**
* Test that providing a context_module instance to is_subscribed does not result in additional lookups to retrieve
* the context_module.
*/
public function test_is_subscribed_cm()
{
global $DB;
$this->resetAfterTest(true);
// Create a course, with a forum.
$course = $this->getDataGenerator()->create_course();
$options = array('course' => $course->id, 'forcesubscribe' => FORUM_FORCESUBSCRIBE);
$forum = $this->getDataGenerator()->create_module('forum', $options);
// Create a user enrolled in the course as a student.
list($user) = $this->helper_create_users($course, 1);
// Retrieve the $cm now.
$cm = get_fast_modinfo($forum->course)->instances['forum'][$forum->id];
// Reset get_fast_modinfo.
get_fast_modinfo(0, 0, true);
// Call is_subscribed without passing the $cmid - this should result in a lookup and filling of some of the
// caches. This provides us with consistent data to start from.
$this->assertTrue(\mod_forum\subscriptions::is_subscribed($user->id, $forum));
$this->assertTrue(\mod_forum\subscriptions::is_subscribed($user->id, $forum));
// Make a note of the number of DB calls.
$basecount = $DB->perf_get_reads();
// Call is_subscribed - it should give return the correct result (False), and result in no additional queries.
$this->assertTrue(\mod_forum\subscriptions::is_subscribed($user->id, $forum, null, $cm));
// The capability check does require some queries, so we don't test it directly.
// We don't assert here because this is dependant upon linked code which could change at any time.
$suppliedcmcount = $DB->perf_get_reads() - $basecount;
// Call is_subscribed without passing the $cmid now - this should result in a lookup.
get_fast_modinfo(0, 0, true);
$basecount = $DB->perf_get_reads();
$this->assertTrue(\mod_forum\subscriptions::is_subscribed($user->id, $forum));
$calculatedcmcount = $DB->perf_get_reads() - $basecount;
// There should be more queries than when we performed the same check a moment ago.
$this->assertGreaterThan($suppliedcmcount, $calculatedcmcount);
}
$forum,
$discussiongroup,
$modcontext,
'u.id'
);
// Pre-seed the subscribed_discussion caches.
// Firstly for the forum being moved to.
\mod_forum\subscriptions::fill_subscription_cache($forumto->id);
// And also for the discussion being moved.
\mod_forum\subscriptions::fill_subscription_cache($forum->id);
$subscriptionchanges = array();
foreach ($potentialsubscribers as $subuser) {
$userid = $subuser->id;
$targetsubscription = \mod_forum\subscriptions::is_subscribed($userid, $forumto, null, $cmto);
if (\mod_forum\subscriptions::is_subscribed($userid, $forum, $discussion->id)) {
if (!$targetsubscription) {
$subscriptionchanges[$userid] = \mod_forum\subscriptions::FORUM_DISCUSSION_SUBSCRIBED;
}
} else {
if ($targetsubscription) {
$subscriptionchanges[$userid] = \mod_forum\subscriptions::FORUM_DISCUSSION_UNSUBSCRIBED;
}
}
}
$DB->set_field('forum_discussions', 'forum', $forumto->id, array('id' => $discussion->id));
$DB->set_field('forum_read', 'forumid', $forumto->id, array('discussionid' => $discussion->id));
// Delete the existing per-discussion subscriptions and replace them with the newly calculated ones.
$DB->delete_records('forum_discussion_subs', array('discussion' => $discussion->id));
$context = context_module::instance($cm->id);
if ($user) {
require_sesskey();
if (!has_capability('mod/forum:managesubscriptions', $context)) {
print_error('nopermissiontosubscribe', 'forum');
}
$user = $DB->get_record('user', array('id' => $user), '*', MUST_EXIST);
} else {
$user = $USER;
}
if (isset($cm->groupmode) && empty($course->groupmodeforce)) {
$groupmode = $cm->groupmode;
} else {
$groupmode = $course->groupmode;
}
$issubscribed = \mod_forum\subscriptions::is_subscribed($user->id, $forum, $discussionid, $cm);
// For a user to subscribe when a groupmode is set, they must have access to at least one group.
if ($groupmode && !$issubscribed && !has_capability('moodle/site:accessallgroups', $context)) {
if (!groups_get_all_groups($course->id, $USER->id)) {
print_error('cannotsubscribe', 'forum');
}
}
require_login($course, false, $cm);
if (is_null($mode) and !is_enrolled($context, $USER, '', true)) {
// Guests and visitors can't subscribe - only enrolled
$PAGE->set_title($course->shortname);
$PAGE->set_heading($course->fullname);
if (isguestuser()) {
echo $OUTPUT->header();
echo $OUTPUT->confirm(get_string('subscribeenrolledonly', 'forum') . '<br /><br />' . get_string('liketologin'), get_login_url(), new moodle_url('/mod/forum/view.php', array('f' => $id)));
echo $OUTPUT->footer();
