function handle_attendance_delete() { $eab = events_and_bookings(); $user_id = (int) $_POST['user_id']; $post_id = (int) $_POST['post_id']; $post = get_post($post_id); $event = new Eab_EventModel($post); $event->delete_attendance($user_id); echo $eab->meta_box_part_bookings($post); die; }