protected function category($category)
 {
     $user = Auth::user();
     $videos = Video::where('category', '=', $category)->get();
     return view('pages.category', compact('user', 'videos'));
 }
 public function index()
 {
     $user = Auth::user();
     $videos = Video::all();
     return view('pages.home', compact('user', 'videos'));
 }