/**
  * @param Request $request
  */
 public function store(Request $request)
 {
     if ($this->validator($request->all())->fails()) {
         flash()->error('You have missing fields.');
         return redirect()->back();
     }
     $training = Training::create($request->all());
     if ($training) {
         if (is_array($request->participants)) {
             foreach ($request->input('participants') as $participant) {
                 try {
                     if ($participant == 'all') {
                         foreach (Employee::all() as $employee) {
                             TrainingParticipant::create(['training_id' => $training->id, 'employee_id' => $employee->id]);
                             // $training->employees()->attach($employee->id);
                         }
                         break;
                     } elseif (is_object(json_decode($participant))) {
                         $participant = json_decode($participant);
                         foreach (Department::find($participant->id)->users as $user) {
                             TrainingParticipant::create(['training_id' => $training->id, 'employee_id' => $user->employee->id]);
                             // $training->employees()->attach($user->employee->id);
                         }
                     } else {
                         TrainingParticipant::create(['training_id' => $training->id, 'employee_id' => $participant]);
                         // $training->employees()->attach($participant);
                     }
                 } catch (QueryException $ex) {
                 }
             }
         }
         flash()->success('Successfully added the trainings and seminar.');
     } else {
         flash()->error('Oopss! Something went wrong.');
     }
     return redirect()->back();
 }