DenyOnCacheControlOverride.php in Cache Control Override 8

Namespace

Drupal\cache_control_override\PageCache

File

src/PageCache/DenyOnCacheControlOverride.php

<?php

namespace Drupal\cache_control_override\PageCache;

use Drupal\Core\Cache\CacheableResponseInterface;
use Drupal\Core\PageCache\ResponsePolicyInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;

/**
 * Cache policy for responses that have a bubbled max-age=0.
 */
class DenyOnCacheControlOverride implements ResponsePolicyInterface {

  /**
   * {@inheritdoc}
   */
  public function check(Response $response, Request $request) {
    if (!$response instanceof CacheableResponseInterface) {
      return NULL;
    }
    if ($response
      ->getCacheableMetadata()
      ->getCacheMaxAge() === 0) {

      // @TODO: This will affect users using Internal Page Cache as well, find a way to document that.
      return static::DENY;
    }
  }

}

Classes

Name	Description
DenyOnCacheControlOverride	Cache policy for responses that have a bubbled max-age=0.