function AnonymousUserResponseSubscriber::onRespond
Same name in other branches
- 9 core/lib/Drupal/Core/EventSubscriber/AnonymousUserResponseSubscriber.php \Drupal\Core\EventSubscriber\AnonymousUserResponseSubscriber::onRespond()
- 8.9.x core/lib/Drupal/Core/EventSubscriber/AnonymousUserResponseSubscriber.php \Drupal\Core\EventSubscriber\AnonymousUserResponseSubscriber::onRespond()
- 11.x core/lib/Drupal/Core/EventSubscriber/AnonymousUserResponseSubscriber.php \Drupal\Core\EventSubscriber\AnonymousUserResponseSubscriber::onRespond()
Adds a cache tag if the 'user.permissions' cache context is present.
Parameters
\Symfony\Component\HttpKernel\Event\ResponseEvent $event: The event to process.
File
-
core/
lib/ Drupal/ Core/ EventSubscriber/ AnonymousUserResponseSubscriber.php, line 40
Class
- AnonymousUserResponseSubscriber
- Response subscriber to handle finished responses for the anonymous user.
Namespace
Drupal\Core\EventSubscriberCode
public function onRespond(ResponseEvent $event) {
if (!$event->isMainRequest()) {
return;
}
if (!$this->currentUser
->isAnonymous()) {
return;
}
$response = $event->getResponse();
if (!$response instanceof CacheableResponseInterface) {
return;
}
// The 'user.permissions' cache context ensures that if the permissions for
// a role are modified, users are not served stale render cache content.
// But, when entire responses are cached in reverse proxies, the value for
// the cache context is never calculated, causing the stale response to not
// be invalidated. Therefore, when varying by permissions and the current
// user is the anonymous user, also add the cache tag for the 'anonymous'
// role.
if (in_array('user.permissions', $response->getCacheableMetadata()
->getCacheContexts())) {
$per_permissions_response_for_anon = new CacheableMetadata();
$per_permissions_response_for_anon->setCacheTags([
'config:user.role.anonymous',
]);
$response->addCacheableDependency($per_permissions_response_for_anon);
}
}
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