66 lines
1.8 KiB
PHP
66 lines
1.8 KiB
PHP
<?php
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namespace Sensio\Bundle\FrameworkExtraBundle\EventListener;
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use Symfony\Component\HttpKernel\Event\FilterResponseEvent;
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use Symfony\Component\HttpFoundation\Response;
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/*
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* This file is part of the Symfony framework.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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/**
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* The CacheListener class has the responsability to modify the
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* Response object when a controller uses the @Cache annotation.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class CacheListener
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{
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/**
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* Modifies the response to apply HTTP expiration header fields.
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*
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* @param FilterResponseEvent $event The notified event
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*/
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public function onKernelResponse(FilterResponseEvent $event)
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{
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if (!$configuration = $event->getRequest()->attributes->get('_cache')) {
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return;
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}
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$response = $event->getResponse();
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if (!$response->isSuccessful()) {
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return;
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}
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if (null !== $configuration->getSMaxAge()) {
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$response->setSharedMaxAge($configuration->getSMaxAge());
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}
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if (null !== $configuration->getMaxAge()) {
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$response->setMaxAge($configuration->getMaxAge());
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}
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if (null !== $configuration->getExpires()) {
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$date = \DateTime::createFromFormat('U', strtotime($configuration->getExpires()), new \DateTimeZone('UTC'));
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$response->setExpires($date);
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}
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if (null !== $configuration->getVary()) {
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$response->setVary($configuration->getVary());
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}
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if ($configuration->isPublic()) {
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$response->setPublic();
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}
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$event->setResponse($response);
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}
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}
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