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<?php
namespace Drupal\Core\EventSubscriber;
use Drupal\Core\ParamConverter\ParamConverterManagerInterface;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Drupal\Core\Routing\RoutingEvents;
use Drupal\Core\Routing\RouteBuildEvent;
/**
* Event subscriber for registering parameter converters with routes.
*/
class ParamConverterSubscriber implements EventSubscriberInterface {
/**
* The parameter converter manager.
*
* @var \Drupal\Core\ParamConverter\ParamConverterManagerInterface
*/
protected $paramConverterManager;
/**
* Constructs a new ParamConverterSubscriber.
*
* @param \Drupal\Core\ParamConverter\ParamConverterManagerInterface $param_converter_manager
* The parameter converter manager that will be responsible for upcasting
* request attributes.
*/
public function __construct(ParamConverterManagerInterface $param_converter_manager) {
$this->paramConverterManager = $param_converter_manager;
}
/**
* Applies parameter converters to route parameters.
*
* @param \Drupal\Core\Routing\RouteBuildEvent $event
* The event to process.
*/
public function onRoutingRouteAlterSetParameterConverters(RouteBuildEvent $event) {
$this->paramConverterManager->setRouteParameterConverters($event->getRouteCollection());
}
/**
* {@inheritdoc}
*/
public static function getSubscribedEvents(): array {
// Run after \Drupal\system\EventSubscriber\AdminRouteSubscriber.
$events[RoutingEvents::ALTER][] = ['onRoutingRouteAlterSetParameterConverters', -220];
return $events;
}
}
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