/**
  * Run the database seeds.
  *
  * @return void
  */
 public function run()
 {
     $words = Word::all();
     $categories = Category::all();
     foreach ($words as $word) {
         $categoryIndex = mt_rand(0, count($categories) - 1);
         $word->categories()->save($categories[$categoryIndex]);
     }
 }
 /**
  * Display a listing of the resource.
  *
  * @return \Illuminate\Http\Response
  */
 public function index()
 {
     $words = Word::all();
     return view('word.index', ['words' => $words]);
 }