public function removePriceCategoryNgAction($priceCategory_id)
 {
     $em = $this->getDoctrine()->getManager();
     $response = new Response(json_encode(array("result" => PriceCategory::removePriceCategoryById($em, $priceCategory_id))));
     $response->headers->set('Content-Type', 'application/json');
     return $response;
 }
 public static function addPriceCategory($em, $parameters)
 {
     $priceCategory = new PriceCategory();
     $priceCategory->setName($parameters->name);
     $priceCategory->setLevel($parameters->level);
     $em->persist($priceCategory);
     $em->flush();
     return $priceCategory;
 }