/**
  * @Route("/comment_enable/{id}", name="admin_enable_comment")
  * @ParamConverter("comment", options={"mapping": {"id": "id"}})
  * @Security("has_role('ROLE_ADMIN')")
  */
 public function enableCommentAction(Request $request, Comment $comment)
 {
     $comment->setEnabled(true);
     $em = $this->getDoctrine()->getManager();
     $em->flush();
     return $this->redirectToRoute('admin_comments');
 }