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<?php |
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namespace Innmind\RestBundle\EventListener; |
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use Innmind\Rest\Server\Routing\RouteKeys; |
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use Innmind\Rest\Server\Registry; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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use Symfony\Component\HttpKernel\Event\GetResponseForControllerResultEvent; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\Routing\Generator\UrlGeneratorInterface; |
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use Symfony\Component\HttpFoundation\Response; |
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class CapabilitiesResponseListener implements EventSubscriberInterface |
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{ |
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protected $urlGenerator; |
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protected $registry; |
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public function __construct( |
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UrlGeneratorInterface $urlGenerator, |
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Registry $registry |
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) { |
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$this->urlGenerator = $urlGenerator; |
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$this->registry = $registry; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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KernelEvents::VIEW => 'buildResponse', |
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]; |
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} |
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/** |
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* Build the response to expose all routes of the API |
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* |
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* @param GetResponseForControllerResultEvent $event |
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* |
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* @return void |
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*/ |
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public function buildResponse(GetResponseForControllerResultEvent $event) |
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{ |
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$request = $event->getRequest(); |
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if ( |
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!$request->attributes->has(RouteKeys::ACTION) || |
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$request->attributes->get(RouteKeys::ACTION) !== 'capabilities' |
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) { |
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return; |
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} |
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$routes = $event->getControllerResult(); |
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$response = new Response; |
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$links = $response->headers->get('Link', null, false); |
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foreach ($routes as $name => $route) { |
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$definition = $route->getDefault(RouteKeys::DEFINITION); |
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list($collection, $resource) = explode('::', $definition); |
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$definition = $this |
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->registry |
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->getCollection($collection) |
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->getResource($resource); |
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$links[] = sprintf( |
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'<%s>; rel="endpoint"; name="%s_%s"', |
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$this->urlGenerator->generate($name), |
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$definition->getCollection(), |
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$definition |
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); |
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} |
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$response->headers->add(['Link' => $links]); |
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$event->setResponse($response); |
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} |
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} |
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Innmind /
RestBundle
