Symfony Profiler

<?php
namespace Knp\Component\Pager\Event\Subscriber\Sortable;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Knp\Component\Pager\Event\ItemsEvent;
use Elastica\Query;
use Elastica\SearchableInterface;
use Knp\Component\Pager\PaginatorInterface;
class ElasticaQuerySubscriber implements EventSubscriberInterface
{
public function items(ItemsEvent $event)
{
// Check if the result has already been sorted by an other sort subscriber
$customPaginationParameters = $event->getCustomPaginationParameters();
if (!empty($customPaginationParameters['sorted']) ) {
return;
}
if (is_array($event->target) && 2 === count($event->target) && reset($event->target) instanceof SearchableInterface && end($event->target) instanceof Query) {
$event->setCustomPaginationParameter('sorted', true);
list($searchable, $query) = $event->target;
if (isset($_GET[$event->options[PaginatorInterface::SORT_FIELD_PARAMETER_NAME]])) {
$field = $_GET[$event->options[PaginatorInterface::SORT_FIELD_PARAMETER_NAME]];
$dir = isset($_GET[$event->options[PaginatorInterface::SORT_DIRECTION_PARAMETER_NAME]]) && strtolower($_GET[$event->options[PaginatorInterface::SORT_DIRECTION_PARAMETER_NAME]]) === 'asc' ? 'asc' : 'desc';
if (isset($event->options[PaginatorInterface::SORT_FIELD_WHITELIST]) && !in_array($field, $event->options[PaginatorInterface::SORT_FIELD_WHITELIST])) {
throw new \UnexpectedValueException(sprintf('Cannot sort by: [%s] this field is not in whitelist',$field));
}
$query->setSort(array(
$field => array('order' => $dir),
));
}
}
}
public static function getSubscribedEvents()
{
return array(
'knp_pager.items' => array('items', 1)
);
}
}

vendor/knplabs/knp-components/src/Knp/Component/Pager/Event/Subscriber/Sortable/ElasticaQuerySubscriber.php line 13