/**
  * Store a newly created resource in storage.
  *
  * @param  \Illuminate\Http\Request  $request
  *
  * @return \Illuminate\Http\Response
  */
 public function store(Request $request)
 {
     $validator = \Validator::make($request->all(), ['word_id' => 'required|exists:words,id', 'translation_id' => 'required|exists:translations,id']);
     if ($validator->passes()) {
         $user = \Auth::user();
         $word = Word::find($request->input('word_id'));
         if (!$user->exercises()->where('word_id', $word->id)->first()) {
             if ($translation = $word->translations()->find($request->input('translation_id'))) {
                 $exercise = new Exercise();
                 $exercise->setNewStatus($user);
                 $exercise->user()->associate($user);
                 $exercise->word()->associate($word);
                 $exercise->save();
                 $exercise->translations()->attach($translation);
                 $response = response()->json(['id' => $exercise->getId()], 201);
             } else {
                 $response = response()->json(['errors' => ['This translation hasn\'t found in the exercise word.']], 404);
             }
         } else {
             $response = response()->json(['errors' => ['You already have this word in your exercises.']], 400);
         }
     } else {
         $response = response()->json(['errors' => $validator->messages()->all()], 400);
     }
     return $response;
 }
 public function createExercise()
 {
     $users = User::all();
     $words = Word::all();
     foreach (range(1, 5) as $i) {
         $user = $users->random();
         $word = $words->random();
         $translation = $word->translations->random();
         $exercise = new Exercise();
         $exercise->status = 'new';
         $exercise->reading = 10;
         $exercise->memory = 10;
         $exercise->user()->associate($user);
         $exercise->word()->associate($word);
         $exercise->translation()->associate($translation);
         $exercise->save();
         echo 'Exercise id: ' . $exercise->id . '<br>';
     }
 }