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| <?php | |
| /** | |
| * @file | |
| * Contains \Drupal\Core\EventSubscriber\SpecialAttributesRouteSubscriber. | |
| */ | |
| namespace Drupal\Core\EventSubscriber; | |
| use Drupal\Core\Routing\RouteBuildEvent; | |
| use Drupal\Core\Routing\RouteSubscriberBase; | |
| use Symfony\Cmf\Component\Routing\RouteObjectInterface; | |
| use Symfony\Component\Routing\RouteCollection; | |
| /** | |
| * Provides a route subscriber which checks for invalid pattern variables. | |
| */ | |
| class SpecialAttributesRouteSubscriber extends RouteSubscriberBase { | |
| /** | |
| * {@inheritdoc} | |
| */ | |
| protected function alterRoutes(RouteCollection $collection) { | |
| $special_variables = array( | |
| 'system_path', | |
| '_legacy', | |
| '_raw_variables', | |
| RouteObjectInterface::ROUTE_OBJECT, | |
| RouteObjectInterface::ROUTE_NAME, | |
| '_content', | |
| '_controller', | |
| '_form', | |
| ); | |
| foreach ($collection->all() as $name => $route) { | |
| if ($not_allowed_variables = array_intersect($route->compile()->getVariables(), $special_variables)) { | |
| $reserved = implode(', ', $not_allowed_variables); | |
| trigger_error(sprintf('Route %s uses reserved variable names: %s', $name, $reserved), E_USER_WARNING); | |
| } | |
| } | |
| } | |
| /** | |
| * Delegates the route altering to self::alterRoutes(). | |
| * | |
| * @param \Drupal\Core\Routing\RouteBuildEvent $event | |
| * The route build event. | |
| */ | |
| public function onAlterRoutes(RouteBuildEvent $event) { | |
| $collection = $event->getRouteCollection(); | |
| $this->alterRoutes($collection); | |
| } | |
| } |