Newscoop\GimmeBundle\Controller\TopicsController::deleteTopicAction PHP Метод

    public function deleteTopicAction(Request $request, $id)
    {
        $topicService = $this->get('newscoop_newscoop.topic_service');
        $em = $this->container->get('em');
        $topic = $em->getRepository('Newscoop\\NewscoopBundle\\Entity\\Topic')->findOneBy(array('id' => $id));
        if (!$topic) {
            throw new NotFoundHttpException('Topic was not found');
        }
        $topicService->deleteTopic($topic);
        $response = new Response();
        $response->setStatusCode(204);
        return $response;
    }