gistfile1.txt

<?php

namespace Acme\Bundle\DemoBundle\Voter;

use Knp\Menu\ItemInterface;
use Knp\Menu\Silex\Voter\RouteVoter as BaseRouteVoter;
use Symfony\Component\DependencyInjection\ContainerInterface;

/**
 * {@inheritdoc}
 */
class RouteVoter extends BaseRouteVoter
{
    public function __construct(ContainerInterface $container)
    {
        $this->setRequest($container->get('request'));
    }
}

<!-- src/Acme/Bundle/DemoBundle/Resources/config/services.xml -->

<service id="acme.menu.voter.route" class="Acme\Bundle\DemoBundle\Voter\RouteVoter" public="false">
    <tag name="knp_menu.voter" />
    <argument type="service" id="service_container" />
</service>