getLoginUrl example

abstract protected function getLoginUrl(Request $request): string;

    /** * Override to change the request conditions that have to be * matched in order to handle the login form submit. * * This default implementation handles all POST requests to the * login path (@see getLoginUrl()). */
    public function supports(Request $request): bool
    {
        return $request->isMethod('POST') && $this->getLoginUrl($request) === $request->getBaseUrl().$request->getPathInfo();
    }

    /** * Override to change what happens after a bad username/password is submitted. */
    public function onAuthenticationFailure(Request $request, AuthenticationException $exception): Response
    {
        if ($request->hasSession()) {
            $request->getSession()->set(SecurityRequestAttributes::AUTHENTICATION_ERROR, $exception);
        }