/** save a new comment from submit
*
* @global record $USER
* @global object $DB
* @return array, result array.
*/
public function save_likes_from_submit()
{
global $USER, $DB;
if (empty($this->course->enablelikes)) {
print_error('likesaredisabled', 'format_socialwall');
}
// Ensure that post exists and get the right courseid.
$postid = required_param('postid', PARAM_INT);
if (!($post = $DB->get_record('format_socialwall_posts', array('id' => $postid)))) {
print_error('invalidpostid', 'format_socialwall');
}
$userlike = optional_param('userlike', '0', PARAM_INT);
// ... check capability.
$coursecontext = \context_course::instance($post->courseid);
if (!has_capability('format/socialwall:like', $coursecontext)) {
print_error('missingcaplikepost', 'format_socialwall');
}
$refresh = false;
if (empty($userlike)) {
if ($like = $DB->get_records('format_socialwall_likes', array('postid' => $postid, 'fromuserid' => $USER->id))) {
$DB->delete_records_select('format_socialwall_likes', 'fromuserid = ? AND postid = ?', array($USER->id, $postid));
$refresh = true;
// We use a instant enqueueing, if needed you might use events here.
notification::enqueue_like_deleted($post);
}
} else {
if (!($like = $DB->get_records('format_socialwall_likes', array('postid' => $postid, 'fromuserid' => $USER->id)))) {
$newlike = new \stdClass();
$newlike->courseid = $this->course->id;
$newlike->postid = $postid;
$newlike->fromuserid = $USER->id;
$newlike->timecreated = time();
$DB->insert_record('format_socialwall_likes', $newlike);
$refresh = true;
notification::enqueue_like_created($post);
}
}
$result = array('error' => '0', 'message' => 'likesaved', 'postid' => $postid, 'userlike' => $userlike, 'countcomments' => $post->countcomments, 'countlikes' => $post->countlikes);
if ($refresh) {
$posts = posts::instance($this->course->id);
$result['countlikes'] = $posts->refresh_likes_count($postid);
}
return $result;
}
