/**
  * Run the database seeds.
  *
  * @return void
  */
 public function run()
 {
     $posts = Post::all();
     $category = new Category();
     $category->name = "Main category";
     $category->generateSlug();
     $category->save();
     foreach ($posts as $post) {
         $post->categories()->attach($category);
         $post->save();
     }
 }
 /**
  * Store a newly created resource in storage.
  *
  * @param Request $request
  * @return Response
  */
 public function postStore(Request $request)
 {
     $validator = Validator::make($request->all(), ['name' => 'required|max:255|unique:categories']);
     if (!$validator->fails()) {
         $category = new Category();
         $category->name = $request->get("name");
         $category->generateSlug();
         $category->save();
     } else {
         $this->throwValidationException($request, $validator);
     }
     return redirect()->back();
 }