/**
  * Display a listing of the resource.
  *
  * @return \Illuminate\Http\Response
  */
 public function index(Request $request)
 {
     $intSearch = intval($request->get('id'));
     $data = array();
     if ($request->has('id')) {
         $all = Copy::where('id', 'like', '%' . $intSearch . '%')->get();
     } else {
         $all = Copy::all();
     }
     for ($i = 0; $i < count($all); $i++) {
         $all[$i]->work = $all[$i]->work()->first();
         if (strpos($all[$i]->work->id, $intSearch) !== false) {
             $data[] = $all[$i];
         }
         unset($all[$i]->work_id);
     }
     if (count($data) > 0) {
         return $data;
     }
     return $all;
 }