public function loginAction() {

            $em = $this->getDoctrine()->getManager();
            $request = $this->getRequest();
            if ($request->getMethod() == 'POST') {
                $username = $request->request->get('username');
                $password = $request->request->get('password');

             $test = $em->getRepository('MedBundle:Med')->findOneBy(array('username' => $username));

                if (!($test)) { var_dump('error'); } else{
                    $salt= $test->getSalt();
                    $pass = crypt($password,$salt);
                    if ( $pass === $test->getPassword() ) {
                    var_dump('success'); }
                }

                $x = $this->get('lexik_jwt_authentication.jwt_manager')->create($test);
                var_dump($x);
     }
                return $this->render('default/login.html.twig');

        }