/**
* Observer for role_assigned event.
*
* @param \core\event\role_assigned $event
* @return void
*/
public static function role_assigned(\core\event\role_assigned $event)
{
global $CFG, $DB;
$context = context::instance_by_id($event->contextid, MUST_EXIST);
// If contextlevel is course then only subscribe user. Role assignment
// at course level means user is enroled in course and can subscribe to forum.
if ($context->contextlevel != CONTEXT_COURSE) {
return;
}
// Forum lib required for the constant used below.
require_once $CFG->dirroot . '/mod/hsuforum/lib.php';
$userid = $event->relateduserid;
$sql = "SELECT f.id, cm.id AS cmid\n FROM {hsuforum} f\n JOIN {course_modules} cm ON (cm.instance = f.id)\n JOIN {modules} m ON (m.id = cm.module)\n LEFT JOIN {hsuforum_subscriptions} fs ON (fs.forum = f.id AND fs.userid = :userid)\n WHERE f.course = :courseid\n AND f.forcesubscribe = :initial\n AND m.name = 'hsuforum'\n AND fs.id IS NULL";
$params = array('courseid' => $context->instanceid, 'userid' => $userid, 'initial' => HSUFORUM_INITIALSUBSCRIBE);
$forums = $DB->get_records_sql($sql, $params);
foreach ($forums as $forum) {
// If user doesn't have allowforcesubscribe capability then don't subscribe.
$modcontext = context_module::instance($forum->cmid);
if (has_capability('mod/hsuforum:allowforcesubscribe', $modcontext, $userid)) {
hsuforum_subscribe($userid, $forum->id, $modcontext);
}
}
}
echo $OUTPUT->confirm(get_string('confirmunsubscribe', 'hsuforum', format_string($forum->name)), new moodle_url($PAGE->url, array('sesskey' => sesskey())), new moodle_url('/mod/hsuforum/view.php', array('f' => $id)));
echo $OUTPUT->footer();
exit;
}
require_sesskey();
if (hsuforum_unsubscribe($user->id, $forum->id)) {
redirect($returnto, get_string("nownotsubscribed", "hsuforum", $info), 1);
} else {
print_error('cannotunsubscribe', 'hsuforum', $_SERVER["HTTP_REFERER"]);
}
} else {
// subscribe
if ($forum->forcesubscribe == HSUFORUM_DISALLOWSUBSCRIBE && !has_capability('mod/hsuforum:managesubscriptions', $context)) {
print_error('disallowsubscribe', 'hsuforum', $_SERVER["HTTP_REFERER"]);
}
if (!has_capability('mod/hsuforum:viewdiscussion', $context)) {
print_error('noviewdiscussionspermission', 'hsuforum', $_SERVER["HTTP_REFERER"]);
}
if (is_null($sesskey)) {
// we came here via link in email
$PAGE->set_title($course->shortname);
$PAGE->set_heading($course->fullname);
echo $OUTPUT->header();
echo $OUTPUT->confirm(get_string('confirmsubscribe', 'hsuforum', format_string($forum->name)), new moodle_url($PAGE->url, array('sesskey' => sesskey())), new moodle_url('/mod/hsuforum/view.php', array('f' => $id)));
echo $OUTPUT->footer();
exit;
}
require_sesskey();
hsuforum_subscribe($user->id, $forum->id);
redirect($returnto, get_string("nowsubscribed", "hsuforum", $info), 1);
}
/// Do course wide subscribe/unsubscribe
if (!is_null($subscribe) and !isguestuser()) {
foreach ($modinfo->get_instances_of('hsuforum') as $forumid => $cm) {
$forum = $forums[$forumid];
$modcontext = context_module::instance($cm->id);
$cansub = false;
if (has_capability('mod/hsuforum:viewdiscussion', $modcontext)) {
$cansub = true;
}
if ($cansub && $cm->visible == 0 && !has_capability('mod/hsuforum:managesubscriptions', $modcontext)) {
$cansub = false;
}
if (!hsuforum_is_forcesubscribed($forum)) {
$subscribed = hsuforum_is_subscribed($USER->id, $forum);
if ((has_capability('moodle/course:manageactivities', $coursecontext, $USER->id) || $forum->forcesubscribe != HSUFORUM_DISALLOWSUBSCRIBE) && $subscribe && !$subscribed && $cansub) {
hsuforum_subscribe($USER->id, $forumid, $modcontext);
} else {
if (!$subscribe && $subscribed) {
hsuforum_unsubscribe($USER->id, $forumid, $modcontext);
}
}
}
}
$returnto = hsuforum_go_back_to("index.php?id={$course->id}");
$shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
if ($subscribe) {
redirect($returnto, get_string('nowallsubscribed', 'hsuforum', $shortname), 1);
} else {
redirect($returnto, get_string('nowallunsubscribed', 'hsuforum', $shortname), 1);
}
}
$options = array('forumid' => $forum->id, 'currentgroup' => $currentgroup, 'context' => $context);
$existingselector = new hsuforum_existing_subscriber_selector('existingsubscribers', $options);
$subscriberselector = new hsuforum_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 $unsubscribe)) {
print_error('invalidaction');
}
if ($subscribe) {
$users = $subscriberselector->get_selected_users();
foreach ($users as $user) {
if (!hsuforum_subscribe($user->id, $id)) {
print_error('cannotaddsubscriber', 'hsuforum', '', $user->id);
}
}
} else {
if ($unsubscribe) {
$users = $existingselector->get_selected_users();
foreach ($users as $user) {
if (!hsuforum_unsubscribe($user->id, $id)) {
print_error('cannotremovesubscriber', 'hsuforum', '', $user->id);
}
}
}
}
$subscriberselector->invalidate_selected_users();
$existingselector->invalidate_selected_users();
/**
* This function gets run whenever user is enrolled into course
*
* @deprecated deprecating this function as we will be using \mod_hsuforum\observer::role_assigned()
* @param stdClass $cp
* @return void
*/
function hsuforum_user_enrolled($cp)
{
global $DB;
// NOTE: this has to be as fast as possible - we do not want to slow down enrolments!
// Originally there used to be 'mod/hsuforum:initialsubscriptions' which was
// introduced because we did not have enrolment information in earlier versions...
$sql = "SELECT f.id\n FROM {hsuforum} f\n LEFT JOIN {hsuforum_subscriptions} fs ON (fs.forum = f.id AND fs.userid = :userid)\n WHERE f.course = :courseid AND f.forcesubscribe = :initial AND fs.id IS NULL";
$params = array('courseid' => $cp->courseid, 'userid' => $cp->userid, 'initial' => HSUFORUM_INITIALSUBSCRIBE);
$forums = $DB->get_records_sql($sql, $params);
foreach ($forums as $forum) {
hsuforum_subscribe($cp->userid, $forum->id);
}
}