/**
  * Update the specified resource in storage.
  *
  * @param  Request  $status
  * @param  int  $id
  * @return Response
  */
 public function updateFiltered($id, Request $request)
 {
     if ($request->status == "approved") {
         $material = Material::find($id);
         $material->filtered = true;
         $material->save();
     } else {
         Material::destroy($id);
     }
 }