/**
* Performs the specified access check.
*
* @param string $service_id
* The access check service ID to use.
* @param \Symfony\Component\Routing\Route $route
* The route to check access to.
* @param \Symfony\Component\HttpFoundation\Request $request
* The incoming request object.
* @param \Drupal\Core\Session\AccountInterface $account
* The current user.
*
* @throws \Drupal\Core\Access\AccessException
* Thrown when the access check returns an invalid value.
*
* @return string
* A \Drupal\Core\Access\AccessInterface constant value.
*/
protected function performCheck($service_id, $route, $request, $account)
{
$callable = array($this->checks[$service_id], $this->checkMethods[$service_id]);
$arguments = $this->argumentsResolver->getArguments($callable, $route, $request, $account);
$service_access = call_user_func_array($callable, $arguments);
if (!in_array($service_access, array(AccessInterface::ALLOW, AccessInterface::DENY, AccessInterface::KILL), TRUE)) {
throw new AccessException("Access error in {$service_id}. Access services can only return AccessInterface::ALLOW, AccessInterface::DENY, or AccessInterface::KILL constants.");
}
return $service_access;
}
/**
* Checks access for the account and route using the custom access checker.
*
* @param \Symfony\Component\Routing\Route $route
* The route to check against.
* @param \Symfony\Component\HttpFoundation\Request $request
* The request object.
* @param \Drupal\Core\Session\AccountInterface $account
* The currently logged in account.
*
* @return string
* A \Drupal\Core\Access\AccessInterface constant value.
*/
public function access(Route $route, Request $request, AccountInterface $account)
{
$callable = $this->controllerResolver->getControllerFromDefinition($route->getRequirement('_custom_access'));
$arguments = $this->argumentsResolver->getArguments($callable, $route, $request, $account);
return call_user_func_array($callable, $arguments);
}
