public function getTimetable(Request $request)
 {
     if ($request->session()->has('email')) {
         $timetables = Timetable::all()->sortBy('day');
         return view('admin.timetable', compact('timetables'));
     } else {
         return Redirect::action('AdminController@getAdminLogin');
     }
 }
 public function index()
 {
     $timetables = Timetable::all()->sortBy('day');
     return view('timetable.index', compact('timetables'));
 }