Form Authentication Handle Login Error

[jkupcho]

I'd like to handle a login error with my custom login form. Right now, I havequarkus.http.auth.form.error-page=/login, I can see there's an io.quarkus.security.AuthenticationException thrown from the FormAuthenticationMechanism. When this exception is thrown, it's sending a 302 to the login page, but nothing else is set on the URL to hook into any sort of an error. I'd like to re-render the login form with an invalid credentials error, ideally using HTMX.

Would this be possible? I could possibly handle this through a @ServerExceptionMapper and handle the AuthenticationFailedException directly. If that's the case, is there an easy way to map a Qute template to a Response

[jkupcho]

The exception mapping seemed to work. If anyone is interested:

@ServerExceptionMapper
public Response mapAuthenticationFailedException(AuthenticationFailedException e, HttpServerRequest request) {
  var username = request.formAttributes().get("username");
  var password = request.formAttributes().get("password");
  var form = new LoginForm();
  form.hasErrors = true;
  form.username = username;
  form.password = password;
  if (isHxRequest()) {
    return Response.ok(Templates.login$form(form).render()).build();
  }
  return Response.ok(Templates.login(form).render()).build();
}

If there's a better way to handle this, I'm all ears.