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<?php |
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namespace FOS\ElasticaBundle\Subscriber; |
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use Symfony\Component\HttpFoundation\Request; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Knp\Component\Pager\Event\ItemsEvent; |
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use FOS\ElasticaBundle\Paginator\PaginatorAdapterInterface; |
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use FOS\ElasticaBundle\Paginator\PartialResultsInterface; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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class PaginateElasticaQuerySubscriber implements EventSubscriberInterface |
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{ |
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/** |
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* @var RequestStack |
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*/ |
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private $requestStack; |
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/** |
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* @param RequestStack $requestStack |
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*/ |
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public function __construct(RequestStack $requestStack) |
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{ |
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$this->requestStack = $requestStack; |
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} |
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public function items(ItemsEvent $event) |
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{ |
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if ($event->target instanceof PaginatorAdapterInterface) { |
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// Add sort to query |
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$this->setSorting($event); |
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/** @var $results PartialResultsInterface */ |
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$results = $event->target->getResults($event->getOffset(), $event->getLimit()); |
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$event->count = $results->getTotalHits(); |
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$event->items = $results->toArray(); |
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$facets = $results->getFacets(); |
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if (null != $facets) { |
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$event->setCustomPaginationParameter('facets', $facets); |
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} |
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$aggregations = $results->getAggregations(); |
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if (null != $aggregations) { |
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$event->setCustomPaginationParameter('aggregations', $aggregations); |
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} |
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$event->stopPropagation(); |
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} |
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} |
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/** |
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* Adds knp paging sort to query. |
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* |
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* @param ItemsEvent $event |
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*/ |
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protected function setSorting(ItemsEvent $event) |
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{ |
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$request = $this->requestStack->getMasterRequest(); |
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$options = $event->options; |
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$sortField = $request instanceof Request ? $request->get($options['sortFieldParameterName']) : null; |
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if (!empty($sortField)) { |
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// determine sort direction |
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$dir = 'asc'; |
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$sortDirection = $request instanceof Request ? $request->get($options['sortDirectionParameterName']) : null; |
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if ('desc' === strtolower($sortDirection)) { |
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$dir = 'desc'; |
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} |
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// check if the requested sort field is in the sort whitelist |
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if (isset($options['sortFieldWhitelist']) && !in_array($sortField, $options['sortFieldWhitelist'])) { |
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throw new \UnexpectedValueException(sprintf('Cannot sort by: [%s] this field is not in whitelist', $sortField)); |
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} |
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// set sort on active query |
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$event->target->getQuery()->setSort(array( |
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$sortField => array('order' => $dir), |
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)); |
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} |
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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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'knp_pager.items' => array('items', 1), |
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); |
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} |
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} |
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FriendsOfSymfony /
FOSElasticaBundle
