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<?php |
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/* |
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* This file is part of the FOSHttpCacheBundle package. |
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* |
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* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FOS\HttpCacheBundle\EventListener; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpKernel\Event\FilterResponseEvent; |
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use Symfony\Component\HttpFoundation\Session\Session; |
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use Symfony\Component\HttpFoundation\Cookie; |
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use Symfony\Component\HttpFoundation\ResponseHeaderBag; |
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use Symfony\Component\HttpKernel\HttpKernel; |
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use Symfony\Component\HttpKernel\KernelEvents; |
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/** |
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* This event handler reads all flash messages and moves them into a cookie. |
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* |
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* @author Lukas Kahwe Smith <[email protected]> |
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*/ |
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class FlashMessageListener implements EventSubscriberInterface |
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{ |
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/** |
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* @var array |
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*/ |
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private $options; |
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/** |
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* @var Session |
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*/ |
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private $session; |
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/** |
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* Set a serializer instance. |
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* |
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* @param Session $session A session instance |
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* @param array $options |
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*/ |
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public function __construct($session, array $options = array()) |
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{ |
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$this->session = $session; |
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$this->options = $options; |
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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 array( |
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KernelEvents::RESPONSE => 'onKernelResponse', |
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); |
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} |
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/** |
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* Moves flash messages from the session to a cookie inside a Response Kernel listener. |
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* |
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* @param FilterResponseEvent $event |
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*/ |
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public function onKernelResponse(FilterResponseEvent $event) |
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{ |
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if ($event->getRequestType() !== HttpKernel::MASTER_REQUEST) { |
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return; |
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} |
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// Flash messages are stored in the session. If there is none, there |
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// can't be any flash messages in it. $session->getFlashBag() would |
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// create a session, we need to avoid that. |
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if (!$this->session->isStarted()) { |
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return; |
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} |
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$flashBag = $this->session->getFlashBag(); |
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$flashes = $flashBag->all(); |
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if (empty($flashes)) { |
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return; |
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} |
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$response = $event->getResponse(); |
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$cookies = $response->headers->getCookies(ResponseHeaderBag::COOKIES_ARRAY); |
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if (isset($cookies[$this->options['host']][$this->options['path']][$this->options['name']])) { |
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$rawCookie = $cookies[$this->options['host']][$this->options['path']][$this->options['name']]->getValue(); |
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$flashes = array_merge($flashes, json_decode($rawCookie)); |
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} |
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$cookie = new Cookie( |
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$this->options['name'], |
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json_encode($flashes), |
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0, |
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$this->options['path'], |
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$this->options['host'], |
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$this->options['secure'], |
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false |
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); |
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$response->headers->setCookie($cookie); |
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} |
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} |
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FriendsOfSymfony /
FOSHttpCacheBundle
