public function googleListCalendars($user_id)
 {
     $user = GoogleUser::getUserByGoogleId($user_id);
     $calendars = GoogleUserCalendar::where('user_id', '=', $user_id)->get()->lists('calendar_id')->toArray();
     if ($user->user_id != Auth::user()->id) {
         abort(401, "Not authorized to access this data from the current session");
     }
     $data = GoogleUser::getCalendarsByUser($user_id);
     return view("availability.googleCalendars", ['data' => $data->items, 'user' => $user, 'on_calendars' => $calendars]);
 }