Newscoop\NewscoopBundle\Controller\PlaylistsController::articlePreviewAction PHP Метод

    public function articlePreviewAction(Request $request)
    {
        $em = $this->get('em');
        $router = $this->get('router');
        $number = $request->get('id');
        $language = $request->get('lang');
        $article = $em->getRepository('Newscoop\\Entity\\Article')->getArticle($number, $language)->getOneOrNullResult();
        if (!$article) {
            throw new EntityNotFoundException();
        }
        return new RedirectResponse($this->createArticleLegacyPreviewUrl($article));
    }