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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationBrowser. | |
| */ | |
| namespace Drupal\language\Plugin\LanguageNegotiation; | |
| use Drupal\Component\Utility\UserAgent; | |
| use Drupal\language\LanguageNegotiationMethodBase; | |
| use Symfony\Component\HttpFoundation\Request; | |
| /** | |
| * Class for identifying language from the browser Accept-language HTTP header. | |
| * | |
| * @LanguageNegotiation( | |
| * id = \Drupal\language\Plugin\LanguageNegotiation\LanguageNegotiationBrowser::METHOD_ID, | |
| * weight = -2, | |
| * name = @Translation("Browser"), | |
| * description = @Translation("Language from the browser's language settings."), | |
| * config_route_name = "language.negotiation_browser" | |
| * ) | |
| */ | |
| class LanguageNegotiationBrowser extends LanguageNegotiationMethodBase { | |
| /** | |
| * The language negotiation method id. | |
| */ | |
| const METHOD_ID = 'language-browser'; | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| public function getLangcode(Request $request = NULL) { | |
| $langcode = NULL; | |
| if ($this->languageManager && $request && $request->server->get('HTTP_ACCEPT_LANGUAGE')) { | |
| $http_accept_language = $request->server->get('HTTP_ACCEPT_LANGUAGE'); | |
| $langcodes = array_keys($this->languageManager->getLanguages()); | |
| $mappings = $this->config->get('language.mappings')->get('map'); | |
| $langcode = UserAgent::getBestMatchingLangcode($http_accept_language, $langcodes, $mappings); | |
| // Internal page cache with multiple languages and browser negotiation | |
| // could lead to wrong cached sites. Therefore disabling the internal | |
| // page cache. | |
| // @todo Solve more elegantly in https://www.drupal.org/node/2430335. | |
| \Drupal::service('page_cache_kill_switch')->trigger(); | |
| } | |
| return $langcode; | |
| } | |
| } |