/**
  * Display a listing of the resource.
  *
  * @return Response
  */
 public function index($id)
 {
     $current_user = User::find($id);
     $buys = Buys::where('buyed_by', '=', $id)->select('file_id')->get();
     $cont = 0;
     $arr_id[$cont] = 0;
     foreach ($buys as $buy) {
         $arr_id[$cont] = $buy->file_id;
         $cont++;
     }
     $songs = Files::whereIn('id', $arr_id)->get();
     return view('user')->with('songs', $songs)->with('current_user', $current_user);
 }