gistfile1.php

<?php

namespace MyApp\MyBundle\Listener;

use JMS\DiExtraBundle\Annotation as DI;
use Symfony\Component\HttpKernel\Event\GetResponseEvent;
use Symfony\Component\HttpKernel\HttpKernelInterface;

/**
 * @DI\Service()
 * @DI\Tag(name="kernel.event_listener", attributes={"event" = "kernel.request"})
 */
class SessionListener
{
    /**
     * @DI\Inject("router")
     */
    public $router;

    /**
     * @DI\Inject("session")
     */
    public $session;

    /**
     * {@inheritDoc}
     */
    public function onKernelRequest(GetResponseEvent $event)
    {
        if ($event->getRequestType() == HttpKernelInterface::MASTER_REQUEST) {
            if ($routeName = $event->getRequest()->get('_route')) {
                $route = $this
                    ->router
                    ->getRouteCollection()
                    ->get($routeName);

                if ($route) {
                    if (false === $route->getOption('session')) {
                        $this->session->save();
                    }
                }
            }
        }
    }
}