Ojs\JournalBundle\Controller\JournalFileController::deleteAction PHP Метод

    public function deleteAction(Request $request, $id)
    {
        /** @var JournalFile $entity */
        $journal = $this->get('ojs.journal_service')->getSelectedJournal();
        $entity = $this->getDoctrine()->getRepository('OjsJournalBundle:JournalFile')->find($id);
        $this->throw404IfNotFound($entity);
        if (!$this->isGranted('DELETE', $journal, 'files')) {
            throw new AccessDeniedException("You are not authorized for this file!");
        }
        $em = $this->getDoctrine()->getManager();
        $csrf = $this->get('security.csrf.token_manager');
        $token = $csrf->getToken('ojs_journal_filemanager' . $entity->getId());
        if ($token != $request->get('_token')) {
            throw new TokenNotFoundException("Token not found!");
        }
        $this->get('ojs_core.delete.service')->check($entity);
        $em->remove($entity);
        $em->flush();
        $this->successFlashBag('successful.remove');
        return $this->redirectToRoute('ojs_journal_filemanager_index', ['journalId' => $journal->getId()]);
    }