vendor/ibexa/http-cache/src/lib/EventSubscriber/AddContentLanguageHeaderSubscriber.php line 30

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  1. <?php
  3. /**
  4. * @copyright Copyright (C) Ibexa AS. All rights reserved.
  5. * @license For full copyright and license information view LICENSE file distributed with this source code.
  6. */
  7. declare(strict_types=1);
  9. namespace Ibexa\HttpCache\EventSubscriber;
  11. use Ibexa\Contracts\Core\Repository\Values\Content\Content;
  12. use Ibexa\Core\MVC\Symfony\View\CachableView;
  13. use Symfony\Component\EventDispatcher\EventSubscriberInterface;
  14. use Symfony\Component\HttpKernel\Event\ResponseEvent;
  15. use Symfony\Component\HttpKernel\HttpKernelInterface;
  16. use Symfony\Component\HttpKernel\KernelEvents;
  18. final class AddContentLanguageHeaderSubscriber implements EventSubscriberInterface
  19. {
  20. public const CONTENT_LANGUAGE_HEADER = 'x-lang';
  22. /** @var bool */
  23. private $isTranslationAware;
  25. public function __construct(bool $isTranslationAware)
  26. {
  27. $this->isTranslationAware = $isTranslationAware;
  28. }
  30. public function onKernelResponse(ResponseEvent $event)
  31. {
  32. if (!$this->isTranslationAware || HttpKernelInterface::MASTER_REQUEST != $event->getRequestType()) {
  33. return;
  34. }
  36. $request = $event->getRequest();
  37. $view = $request->attributes->get('view');
  38. if (!$view instanceof CachableView || !$view->isCacheEnabled()) {
  39. return;
  40. }
  42. $content = $request->attributes->get('content');
  43. if ($content instanceof Content) {
  44. $event->getResponse()->headers->add([self::CONTENT_LANGUAGE_HEADER => $content->getDefaultLanguageCode()]);
  45. }
  46. }
  48. /**
  49. * {@inheritdoc}
  50. */
  51. public static function getSubscribedEvents()
  52. {
  53. return [
  54. KernelEvents::RESPONSE => 'onKernelResponse',
  55. ];
  56. }
  57. }