function LanguageNegotiationUrlFallback::getLangcode

Overrides LanguageNegotiationMethodInterface::getLangcode

File

core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationUrlFallback.php, line 49

Class

LanguageNegotiationUrlFallback

Determines the language to be assigned to URLs when none is detected.

Namespace

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;
}