Not getting the auth errors of authenticationUtils in symfony - php

Question

I have an issue with the Authentication Errors when login in my app in Symfony 4.
I can perfectly login with all users, but when I try to fail the login on purpose I don't get any error message neither the $error fills. Here I post the code of my LoginFormAuthenticator and my securityController.
LoginFormAuthenticator
class LoginFormAuthenticator extends AbstractFormLoginAuthenticator
{
/**
* #var UserRepository
*/
private $userRepository;
/**
* #var RouterInterface
*/
private $router;
/**
* #var CsrfTokenManagerInterface
*/
private $csrfTokenManager;
/**
* #var UserPasswordEncoderInterface
*/
private $passwordEncoder;
public function __construct(UserRepository $userRepository, RouterInterface $router, CsrfTokenManagerInterface $csrfTokenManager, UserPasswordEncoderInterface $passwordEncoder)
{
$this->userRepository = $userRepository;
$this->router = $router;
$this->csrfTokenManager = $csrfTokenManager;
$this->passwordEncoder = $passwordEncoder;
}
public function supports(Request $request)
{
return $request->attributes->get('_route') === 'app_login'
&& $request->isMethod('POST');
}
public function getCredentials(Request $request)
{
$credentials = [
'cargo' => $request->request->get('cargo'),
'password' => $request->request->get('password'),
'csrf_token' => $request->request->get('_csrf_token'),
];
$request->getSession()->set(
Security::LAST_USERNAME,
$credentials['cargo']
);
return $credentials;
}
public function getUser($credentials, UserProviderInterface $userProvider)
{
$token = new CsrfToken('authenticate', $credentials['csrf_token']);
if (!$this->csrfTokenManager->isTokenValid($token)) {
throw new InvalidCsrfTokenException();
}
return $this->userRepository->findOneBy(['cargo' => $credentials['cargo']]);
}
public function checkCredentials($credentials, UserInterface $user)
{
return $this->passwordEncoder->isPasswordValid($user, $credentials['password']);
}
public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
{
// todo
}
public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
{
return new RedirectResponse($this->router->generate('app_homepage'));
}
public function start(Request $request, AuthenticationException $authException = null)
{
// todo
}
public function supportsRememberMe()
{
// todo
}
protected function getLoginUrl()
{
return $this->router->generate('app_login');
}
}
login function:
/**
* #Route("/login", name="app_login")
*/
public function login(AuthenticationUtils $authenticationUtils)
{
// get the login error if there is one
$error = $authenticationUtils->getLastAuthenticationError();
// last username entered by the user
$lastUsername = $authenticationUtils->getLastUsername();
return $this->render('security/login.html.twig', [
'last_username' => $lastUsername,
'error' => $error,
]);
}
Login HTML twig
<form class="form-signin" method="post">
{% if error %}
<div class="alert alert-danger">{{ error.messageKey|trans(error.messageData, 'security') }}</div>
<h3>{{ error.messageKey }}</h3>
{% endif %}
Thanks!

Answer 1

The onAuthenticationFailure method is empty. See parent::onAuthenticationFailure.
Method should returns Response object.