protected function SpecialAttributesRouteSubscriber::alterRoutes in Drupal 10

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php \Drupal\Core\EventSubscriber\SpecialAttributesRouteSubscriber::alterRoutes()
2. 9 core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php \Drupal\Core\EventSubscriber\SpecialAttributesRouteSubscriber::alterRoutes()

File

core/lib/Drupal/Core/EventSubscriber/SpecialAttributesRouteSubscriber.php, line 18

Class

SpecialAttributesRouteSubscriber

Provides a route subscriber which checks for invalid pattern variables.

Namespace

Drupal\Core\EventSubscriber

Code

protected function alterRoutes(RouteCollection $collection) {
  $special_variables = [
    'system_path',
    '_legacy',
    '_raw_variables',
    RouteObjectInterface::ROUTE_OBJECT,
    RouteObjectInterface::ROUTE_NAME,
    '_content',
    '_controller',
    '_form',
  ];
  foreach ($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);
    }
  }
}