public function PageCacheResponsePolicy::check in Media Download 1.0.x

Same name and namespace in other branches

1. 1.2.x src/PageCacheResponsePolicy.php \Drupal\media_download\PageCacheResponsePolicy::check()
2. 1.1.x src/PageCacheResponsePolicy.php \Drupal\media_download\PageCacheResponsePolicy::check()

Determines whether it is save to store a page in the cache.

Parameters

\Symfony\Component\HttpFoundation\Response $response: The response which is about to be sent to the client.

\Symfony\Component\HttpFoundation\Request $request: The request object.

Return value

string|null Either static::DENY or NULL. Calling code may attempt to store a page in the cache unless static::DENY is returned. Returns NULL if the policy policy is not specified for the given response.

Overrides ResponsePolicyInterface::check

File

src/PageCacheResponsePolicy.php, line 27

Class

PageCacheResponsePolicy

Deny caching of BinaryFileResponse and StreamedResponse class hierarchies.

Namespace

Drupal\media_download

Code

public function check(Response $response, Request $request) {

  // Currently it is not possible to cache binary file or streamed responses.
  // @see https://github.com/symfony/symfony/issues/9128#issuecomment-25088678
  if ($response instanceof BinaryFileResponse || $response instanceof StreamedResponse) {
    return static::DENY;
  }
}