function LanguageNegotiationUser::getLangcode

File

core/modules/user/src/Plugin/LanguageNegotiation/LanguageNegotiationUser.php, line 28

Class

LanguageNegotiationUser

Class for identifying language from the user preferences.

Namespace

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;
}