public function connectAction(Request $request)
    {
        $email = $request->request->get('email');
        $password = $request->request->get('password');
        $em = $this
            ->getDoctrine()
            ->getEntityManager();
        $user = $em
            ->getRepository('MessengerBundle:User')
            ->getUserByLogIn($email, $password);
        if (!$user) {
            return $this->view('User not found :( ', 400);
        }
        $userInformation = $this
            ->get('check_user_connected')
            ->getUserMainInformation($user);
        $serializer = $this->get('jms_serializer');
        $serializer->serialize($userInformation, 'json');
        return $this->view($userInformation, 200);
    }