Newscoop\NewscoopBundle\Controller\TopicsController::attachTopicAction PHP Метод

    public function attachTopicAction(Request $request)
    {
        $translator = $this->get('translator');
        $em = $this->get('em');
        $userService = $this->get('user');
        $user = $userService->getCurrentUser();
        $cacheService = $this->get('newscoop.cache');
        $topicService = $this->get('newscoop_newscoop.topic_service');
        if (!$user->hasPermission('AttachTopicToArticle')) {
            return new JsonResponse(array('status' => false, 'message' => $translator->trans('You do not have the right to attach topics to articles.', array(), 'article_topics')), 403);
        }
        $articleNumber = $request->get('_articleNumber');
        $languageCode = $request->get('_languageCode');
        $qb = $em->getRepository('Newscoop\\Entity\\Article')->createQueryBuilder('a')->join('a.language', 'l')->where('a.number = :number')->andWhere('l.code = :code')->setParameters(array('number' => $articleNumber, 'code' => $languageCode));
        $articleObj = $qb->getQuery()->getOneOrNullResult();
        if (!$articleObj) {
            return new JsonResponse(array('status' => false, 'message' => $translator->trans('Article does not exist.')), 404);
        }
        $ids = $request->get('ids');
        $topicsIds = $this->getArticleTopicsIds($articleNumber);
        $idsDiff = array_merge(array_diff($ids, $topicsIds), array_diff($topicsIds, $ids));
        foreach ($idsDiff as $key => $topicId) {
            $topicObj = $em->getReference("Newscoop\\NewscoopBundle\\Entity\\Topic", $topicId);
            if (in_array($topicId, $topicsIds)) {
                $topicService->removeTopicFromArticle($topicObj, $articleObj);
            } else {
                $topicService->addTopicToArticle($topicObj, $articleObj);
            }
        }
        $cacheService->clearNamespace('topic');
        return new JsonResponse(array('status' => true, 'message' => $translator->trans('topics.alerts.saved', array(), 'topics')));
    }