如何使用自定义过滤器清理输出（API 平台）

Question

我正在尝试使用 api-platform (2.6.5) 在我的实体上添加距离过滤器。一切正常，除了响应主体：

"hydra:member": [
    {
        "0": {
            "@id": "/api/places/1",
            "@type": "Place",
            "id": 1,
            "name": "test",
            "description": "test",
            "slug": "test",
            "address": "test",
            "country": "Suisse",
            "latitude": "50.6300000",
            "longitude": "3.0620000",
            "tableCount": 10,
            "tablePlace": 6,
            "tableCapacity": 60
        },
        "distance": "8.887448516728334"
    },
    {
        "0": {
            "@id": "/api/places/8",
            ...
        },
        "distance": "10.273770606986691"
    },
    {...}

计算的距离不被视为一个实体属性和 api 平台 return 它们分开（这是前端的问题）。

这是我的实体：

/**
* @ORM\Entity(repositoryClass=PlaceRepository::class)
 * @ApiResource(
 *     normalizationContext={"groups"={"place", "place:read"}, "swagger_definition_name": "Read"},
 *     denormalizationContext={"groups"={"place", "place:write"}, "swagger_definition_name": "Write"},
 * )
 * @ApiFilter(SearchFilter::class, properties={"name": "partial", "description": "partial", "zip":"start", "city": "exact"})
 * @ApiFilter(NearbyFilter::class, properties={"location"})
 * @Entity @HasLifecycleCallbacks
 */
class Place
{
....
/**
 * @ORM\Column(type="decimal", precision=10, scale=7, nullable=true)
 * @Groups({"place"})
 */
private $latitude;

/**
 * @ORM\Column(type="decimal", precision=10, scale=7, nullable=true)
 * @Groups({"place"})
 */
private $longitude;
/**
 * @var float The distance calculated
 * @Groups({"place:read"})
 */
private $distance;

这是我的过滤器：

final class NearbyFilter extends AbstractContextAwareFilter
{
    protected function filterProperty(string $property, $value, QueryBuilder $queryBuilder, QueryNameGeneratorInterface $queryNameGenerator, string $resourceClass, string $operationName = null)
    {
        
        if ($property !== 'location') {
            return;
        }
        
        [$lat, $lng, $radius] = explode(',', $value);

        // add distance in DQL based on filter location point
        $queryBuilder
            ->addSelect('
                (6371.0 * acos (
                    cos ( radians(:latitude) )
                    * cos( radians(o.latitude) )
                    * cos( radians(o.longitude) - radians(:longitude) )
                    + sin ( radians(:latitude) )
                    * sin( radians(o.latitude) )
                )) AS distance')
            ->having('distance <= :radius')
            ->setParameter('radius', $radius)
            ->setParameter('latitude', $lat)
            ->setParameter('longitude', $lng)
            ->orderBy('distance')
        ;

    }

如您所见，我尝试添加未映射的属性 'distance' 但没有效果：/ 我也尝试使用 Dto 和 Denormalizer 来解决这个问题但没有成功（但我是新手）。

你能解决我的问题吗？

谢谢！

Answer 1

终于找到了 DataProvider 的解决方案：

namespace App\DataProvider;

use ApiPlatform\Core\DataProvider\CollectionDataProviderInterface;
use ApiPlatform\Core\DataProvider\ContextAwareCollectionDataProviderInterface;
use ApiPlatform\Core\DataProvider\RestrictedDataProviderInterface;
use App\Entity\Place;

class PlaceDataProvider implements ContextAwareCollectionDataProviderInterface, RestrictedDataProviderInterface
{
    private $collectionDataProvider;
    public function __construct(CollectionDataProviderInterface $collectionDataProvider)
    {
        $this->collectionDataProvider = $collectionDataProvider;
    }

    public function getCollection(string $resourceClass, string $operationName = null, array $context = [])
    {
        $places = $this->collectionDataProvider->getCollection($resourceClass, $operationName, $context);

        foreach ($places as &$place) {
            if(!$place instanceof Place && is_array($place)) {
                $sanitizedPlace = $place[0];

                if( !is_null( $place['distance'] ) ){
                    $sanitizedPlace = $this->setDistance($sanitizedPlace, $place['distance']);
                }

                $place = $sanitizedPlace;
            }
        }
        
        return $places;
    }

    public function supports(string $resourceClass, string $operationName = null, array $context = []): bool
    {
        return $resourceClass === Place::class;
    }

    public function setDistance(Place $place, $distance): Place
    {
        $place->setDistance($distance);
        
        return $place;
    }
}

谢谢

如何使用自定义过滤器清理输出（API 平台）

How to sanitize output with custom filter (API Platform)

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api-platform.com