FOS\ElasticaBundle\Subscriber\PaginateElasticaQuerySubscriber

Complexity

Total Complexity

16

Size/Duplication

Total Lines	91
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	5

Test Coverage

Coverage

2.63%

Importance

Changes	6
Bugs	0	Features	1

4 Methods

Rating	Name	Duplication	Size	Complexity
A	setRequest()	0	8	3
A	getSubscribedEvents()	0	6	1
A	items()	0	19	3
D	setSorting()	0	33	9

<?php

namespace FOS\ElasticaBundle\Subscriber;

use FOS\ElasticaBundle\Paginator\PaginatorAdapterInterface;
use FOS\ElasticaBundle\Paginator\PartialResultsInterface;
use Knp\Component\Pager\Event\ItemsEvent;
use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\RequestStack;

class PaginateElasticaQuerySubscriber implements EventSubscriberInterface
{
    /**
     * @var Request
     */
    private $request;

    /**
     * @param RequestStack|Request $requestStack
     */
    public function setRequest($requestStack)
    {
        if ($requestStack instanceof Request) {
            $this->request = $requestStack;
        } elseif ($requestStack instanceof RequestStack) {
            $this->request = $requestStack->getMasterRequest();
        }
    }

    /**
     * @param ItemsEvent $event
     */
    public function items(ItemsEvent $event)
    {
        if ($event->target instanceof PaginatorAdapterInterface) {
            // Add sort to query
            $this->setSorting($event);

            /** @var $results PartialResultsInterface */
            $results = $event->target->getResults($event->getOffset(), $event->getLimit());

            $event->count = $results->getTotalHits();
            $event->items = $results->toArray();
            $aggregations = $results->getAggregations();
            if (null != $aggregations) {
                $event->setCustomPaginationParameter('aggregations', $aggregations);
            }

            $event->stopPropagation();
        }
    }

    /**
     * Adds knp paging sort to query.
     *
     * @param ItemsEvent $event
     */
    protected function setSorting(ItemsEvent $event)
    {
        $options = $event->options;
        $sortField = $this->request->get($options['sortFieldParameterName']);

        if (!$sortField && isset($options['defaultSortFieldName'])) {
            $sortField = $options['defaultSortFieldName'];
        }

        if (!empty($sortField)) {
            // determine sort direction
            $dir = 'asc';
            $sortDirection = $this->request->get($options['sortDirectionParameterName']);

            if (!$sortDirection && isset($options['defaultSortDirection'])) {
                $sortDirection = $options['defaultSortDirection'];
            }

            if ('desc' === strtolower($sortDirection)) {
                $dir = 'desc';
            }

            // check if the requested sort field is in the sort whitelist
            if (isset($options['sortFieldWhitelist']) && !in_array($sortField, $options['sortFieldWhitelist'])) {
                throw new \UnexpectedValueException(sprintf('Cannot sort by: [%s] this field is not in whitelist', $sortField));
            }

            // set sort on active query
            $event->target->getQuery()->setSort(array(
                $sortField => array('order' => $dir, 'ignore_unmapped' => true),
            ));
        }
    }

    /**
     * @return array
     */
    public static function getSubscribedEvents()
    {
        return array(
            'knp_pager.items' => array('items', 1),
        );
    }
}