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<?php |
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/* |
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* This file is part of the FOSElasticaBundle package. |
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* |
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* (c) FriendsOfSymfony <http://friendsofsymfony.github.com/> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace FOS\ElasticaBundle\Subscriber; |
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use FOS\ElasticaBundle\Paginator\PaginatorAdapterInterface; |
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use FOS\ElasticaBundle\Paginator\PartialResultsInterface; |
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use Knp\Component\Pager\Event\ItemsEvent; |
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use Symfony\Component\EventDispatcher\EventSubscriberInterface; |
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use Symfony\Component\HttpFoundation\Request; |
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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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/** |
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* @param ItemsEvent $event |
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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 = $results->toArray(); |
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$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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* @return array |
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*/ |
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public static function getSubscribedEvents() |
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{ |
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return [ |
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'knp_pager.items' => ['items', 1], |
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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 $event) |
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{ |
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$options = $event->options; |
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$sortField = $this->getFromRequest($options['sortFieldParameterName']); |
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if (!$sortField && isset($options['defaultSortFieldName'])) { |
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$sortField = $options['defaultSortFieldName']; |
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} |
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if (!empty($sortField)) { |
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$event->target->getQuery()->setSort([ |
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$sortField => $this->getSort($sortField, $options), |
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]); |
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} |
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} |
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protected function getSort($sortField, array $options = []) |
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{ |
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$sort = [ |
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'order' => $this->getSortDirection($sortField, $options), |
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]; |
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if (isset($options['sortNestedPath'])) { |
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$path = is_callable($options['sortNestedPath']) ? |
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$options['sortNestedPath']($sortField) : $options['sortNestedPath']; |
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if (!empty($path)) { |
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$sort['nested_path'] = $path; |
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} |
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} |
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if (isset($options['sortNestedFilter'])) { |
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$filter = is_callable($options['sortNestedFilter']) ? |
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$options['sortNestedFilter']($sortField) : $options['sortNestedFilter']; |
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if (!empty($filter)) { |
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$sort['nested_filter'] = $filter; |
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} |
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} |
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return $sort; |
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} |
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protected function getSortDirection($sortField, array $options = []) |
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{ |
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$dir = 'asc'; |
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$sortDirection = $this->getFromRequest($options['sortDirectionParameterName']); |
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if (empty($sortDirection) && isset($options['defaultSortDirection'])) { |
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$sortDirection = $options['defaultSortDirection']; |
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} |
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if ('desc' === strtolower($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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return $dir; |
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} |
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/** |
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* @return Request|null |
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*/ |
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private function getRequest() |
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{ |
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return $this->requestStack->getCurrentRequest(); |
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} |
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/** |
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* @param string|null $key |
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* @return mixed|null |
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*/ |
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private function getFromRequest(?string $key) |
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{ |
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if (null !== $request = $this->getRequest()) { |
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return $request->get($key); |
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} |
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return null; |
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} |
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} |
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FriendsOfSymfony /
FOSElasticaBundle
