Same name and namespace in other branches

1. 9 core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUser.php \Drupal\user\Plugin\LanguageNegotiation\LanguageNegotiationUser::getLangcode()
2. 8.9.x core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUser.php \Drupal\user\Plugin\LanguageNegotiation\LanguageNegotiationUser::getLangcode()
3. 11.x core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUser.php \Drupal\user\Plugin\LanguageNegotiation\LanguageNegotiationUser::getLangcode()

Performs language negotiation.

@todo Determine whether string|false or string|null should be the normalized result across all implementations and update the

Parameters

\Symfony\Component\HttpFoundation\Request $request: (optional) The current request. Defaults to NULL if it has not been initialized yet.

Return value

string|null|false A valid language code if the negotiation was successful and either NULL or FALSE otherwise.

and its comment accordingly.

Overrides LanguageNegotiationMethodInterface::getLangcode

File

core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUser.php, line 29

Class

LanguageNegotiationUser

Class for identifying language from the user preferences.

Namespace

Drupal\user\Plugin\LanguageNegotiation

Code

public function getLangcode(?Request $request = NULL) {
  $langcode = NULL;
  // User preference (only for authenticated users).
  if ($this->languageManager && $this->currentUser
    ->isAuthenticated()) {
    $preferred_langcode = $this->currentUser
      ->getPreferredLangcode(FALSE);
    $languages = $this->languageManager
      ->getLanguages();
    if (!empty($preferred_langcode) && isset($languages[$preferred_langcode])) {
      $langcode = $preferred_langcode;
    }
  }
  // No language preference from the user.
  return $langcode;
}

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