Файл: forsoc.ru/vendor/symfony/http-kernel/Symfony/Component/HttpKernel/EventListener/RouterListener.php
Строк: 254
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace SymfonyComponentHttpKernelEventListener;
use PsrLogLoggerInterface;
use SymfonyComponentHttpKernelEventGetResponseEvent;
use SymfonyComponentHttpKernelKernelEvents;
use SymfonyComponentHttpKernelExceptionMethodNotAllowedHttpException;
use SymfonyComponentHttpKernelExceptionNotFoundHttpException;
use SymfonyComponentRoutingExceptionMethodNotAllowedException;
use SymfonyComponentRoutingExceptionResourceNotFoundException;
use SymfonyComponentRoutingMatcherUrlMatcherInterface;
use SymfonyComponentRoutingMatcherRequestMatcherInterface;
use SymfonyComponentRoutingRequestContext;
use SymfonyComponentRoutingRequestContextAwareInterface;
use SymfonyComponentEventDispatcherEventSubscriberInterface;
use SymfonyComponentHttpFoundationRequest;
/**
* Initializes the context from the request and sets request attributes based on a matching route.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class RouterListener implements EventSubscriberInterface
{
private $matcher;
private $context;
private $logger;
private $request;
/**
* Constructor.
*
* @param UrlMatcherInterface|RequestMatcherInterface $matcher The Url or Request matcher
* @param RequestContext|null $context The RequestContext (can be null when $matcher implements RequestContextAwareInterface)
* @param LoggerInterface|null $logger The logger
*
* @throws InvalidArgumentException
*/
public function __construct($matcher, RequestContext $context = null, LoggerInterface $logger = null)
{
if (!$matcher instanceof UrlMatcherInterface && !$matcher instanceof RequestMatcherInterface) {
throw new InvalidArgumentException('Matcher must either implement UrlMatcherInterface or RequestMatcherInterface.');
}
if (null === $context && !$matcher instanceof RequestContextAwareInterface) {
throw new InvalidArgumentException('You must either pass a RequestContext or the matcher must implement RequestContextAwareInterface.');
}
$this->matcher = $matcher;
$this->context = $context ?: $matcher->getContext();
$this->logger = $logger;
}
/**
* Sets the current Request.
*
* The application should call this method whenever the Request
* object changes (entering a Request scope for instance, but
* also when leaving a Request scope -- especially when they are
* nested).
*
* @param Request|null $request A Request instance
*/
public function setRequest(Request $request = null)
{
if (null !== $request && $this->request !== $request) {
$this->context->fromRequest($request);
}
$this->request = $request;
}
public function onKernelRequest(GetResponseEvent $event)
{
$request = $event->getRequest();
// initialize the context that is also used by the generator (assuming matcher and generator share the same context instance)
// we call setRequest even if most of the time, it has already been done to keep compatibility
// with frameworks which do not use the Symfony service container
$this->setRequest($request);
if ($request->attributes->has('_controller')) {
// routing is already done
return;
}
// add attributes based on the request (routing)
try {
// matching a request is more powerful than matching a URL path + context, so try that first
if ($this->matcher instanceof RequestMatcherInterface) {
$parameters = $this->matcher->matchRequest($request);
} else {
$parameters = $this->matcher->match($request->getPathInfo());
}
if (null !== $this->logger) {
$this->logger->info(sprintf('Matched route "%s" (parameters: %s)', isset($parameters['_route']) ? $parameters['_route'] : 'n/a', $this->parametersToString($parameters)));
}
$request->attributes->add($parameters);
unset($parameters['_route'], $parameters['_controller']);
$request->attributes->set('_route_params', $parameters);
} catch (ResourceNotFoundException $e) {
$message = sprintf('No route found for "%s %s"', $request->getMethod(), $request->getPathInfo());
throw new NotFoundHttpException($message, $e);
} catch (MethodNotAllowedException $e) {
$message = sprintf('No route found for "%s %s": Method Not Allowed (Allow: %s)', $request->getMethod(), $request->getPathInfo(), implode(', ', $e->getAllowedMethods()));
throw new MethodNotAllowedHttpException($e->getAllowedMethods(), $message, $e);
}
}
private function parametersToString(array $parameters)
{
$pieces = array();
foreach ($parameters as $key => $val) {
$pieces[] = sprintf('"%s": "%s"', $key, (is_string($val) ? $val : json_encode($val)));
}
return implode(', ', $pieces);
}
public static function getSubscribedEvents()
{
return array(
KernelEvents::REQUEST => array(array('onKernelRequest', 32)),
);
}
}