public function editCalendar()
 {
     $validator = Validator::make(Request::all(), ['id' => 'required', 'allDay' => 'required', 'start' => 'required|date_format:Y-m-d H:i:s', 'end' => 'required|date_format:Y-m-d H:i:s', 'title' => 'required', 'color' => 'required']);
     if ($validator->fails()) {
         return new JsonResponse($validator->errors(), 422);
     }
     $event = Event::find(Request::input('id'));
     $event->title = Request::input('title');
     $event->start = Request::input('start');
     $event->end = Request::input('end');
     $event->allDay = Request::input('allDay');
     $event->color = Request::input('color');
     $event->save();
     return new JsonResponse(Event::all());
 }