interface AccessCheckInterface

AccessManagerTest.php in drupal/core/tests/Drupal/Tests/Core/Access/AccessManagerTest.php

Contains \Drupal\Tests\Core\Access\AccessManagerTest.

CronAccessCheck.php in drupal/core/modules/system/lib/Drupal/system/Access/CronAccessCheck.php

Contains Drupal\system\Access\CronAccessCheck.

CSRFAccessCheck.php in drupal/core/modules/rest/lib/Drupal/rest/Access/CSRFAccessCheck.php

Contains Drupal\rest\Access\CSRFAccessCheck.

DefinedTestAccessCheck.php in drupal/core/modules/system/tests/modules/router_test/lib/Drupal/router_test/Access/DefinedTestAccessCheck.php

Contains \Drupal\router_test\Access\DefinedTestAccessCheck.

DeleteLinkAccessCheck.php in drupal/core/modules/menu/lib/Drupal/menu/Access/DeleteLinkAccessCheck.php

Contains \Drupal\menu\Access\DeleteLinkAccessCheck.

... See full list

interface AccessCheckInterface {

  /**
   * Grant access.
   *
   * A checker should return this value to indicate that it grants access to a
   * route.
   */
  const ALLOW = TRUE;

  /**
   * Deny access.
   *
   * A checker should return this value to indicate it does not grant access to
   * a route.
   */
  const DENY = NULL;

  /**
   * Block access.
   *
   * A checker should return this value to indicate that it wants to completely
   * block access to this route, regardless of any other access checkers. Most
   * checkers should prefer DENY.
   */
  const KILL = FALSE;

  /**
   * Declares whether the access check applies to a specific route or not.
   *
   * @param \Symfony\Component\Routing\Route $route
   *   The route to consider attaching to.
   *
   * @return bool
   *   TRUE if the check applies to the passed route, FALSE otherwise.
   */
  public function applies(Route $route);

  /**
   * Checks for access to route.
   *
   * @param \Symfony\Component\Routing\Route $route
   *   The route to check against.
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The request object.
   *
   * @return mixed
   *   TRUE if access is allowed.
   *   FALSE if not.
   *   NULL if no opinion.
   */
  public function access(Route $route, Request $request);

}