public function actionBulk()
 {
     $submit = request('submit');
     $ids = request('table_records', []);
     switch ($submit) {
         case 'delete':
             ClassroomSession::whereIn('id', $ids)->delete();
             break;
         case 'cancel':
             if (!empty($ids)) {
                 ClassroomSession::where('canceled', 0)->whereIn('id', $ids)->update(['notes' => request('notes'), 'canceled' => 1]);
                 $sessions = ClassroomSession::where('canceled', 0)->whereIn('id', $ids)->get();
                 dispatch(new CancelVirtualClassroomsJob($sessions));
             }
             break;
         default:
             # code...
             break;
     }
     return redirect()->route('classrooms.sessions.index');
 }