public function LanguageNegotiationUrlFallback::getLangcode in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrlFallback.php \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationUrlFallback::getLangcode()

Performs language negotiation.

Parameters

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

Return value

string A valid language code or FALSE if the negotiation was unsuccessful.

Overrides LanguageNegotiationMethodInterface::getLangcode

File

core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrlFallback.php, line 48

Class

LanguageNegotiationUrlFallback

Class that determines the language to be assigned to URLs when none is detected.

Namespace

Drupal\language\Plugin\LanguageNegotiation

Code

public function getLangcode(Request $request = NULL) {
  $langcode = NULL;
  if ($this->languageManager) {
    $default = $this->languageManager
      ->getDefaultLanguage();
    $config = $this->config
      ->get('language.negotiation')
      ->get('url');
    $prefix = $config['source'] == LanguageNegotiationUrl::CONFIG_PATH_PREFIX;

    // If the default language is not configured to convey language
    // information, a missing URL language information indicates that URL
    // language should be the default one, otherwise we fall back to an
    // already detected language.
    if ($prefix && empty($config['prefixes'][$default
      ->getId()]) || !$prefix && empty($config['domains'][$default
      ->getId()])) {
      $langcode = $default
        ->getId();
    }
    else {
      $langcode = $this->languageManager
        ->getCurrentLanguage()
        ->getId();
    }
  }
  return $langcode;
}