Knp\Component\Pager\Event\Subscriber\Sortable\SortableSubscriber::before PHP Method

    public function before(BeforeEvent $event)
    {
        $disp = $event->getEventDispatcher();
        // hook all standard sortable subscribers
        $disp->addSubscriber(new Doctrine\ORM\QuerySubscriber());
        $disp->addSubscriber(new Doctrine\ODM\MongoDB\QuerySubscriber());
        $disp->addSubscriber(new ElasticaQuerySubscriber());
        $disp->addSubscriber(new PropelQuerySubscriber());
        $disp->addSubscriber(new SolariumQuerySubscriber());
        $disp->addSubscriber(new ArraySubscriber());
    }