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<?php |
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/* |
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* This file is part of the Silverback API Components Bundle Project |
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* |
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* (c) Daniel West <[email protected]> |
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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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declare(strict_types=1); |
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namespace Silverback\ApiComponentsBundle\DataTransformer; |
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use ApiPlatform\Core\DataTransformer\DataTransformerInterface; |
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use ApiPlatform\Exception\InvalidIdentifierException; |
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use ApiPlatform\Metadata\ApiResource; |
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use ApiPlatform\Metadata\CollectionOperationInterface; |
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use ApiPlatform\Metadata\HttpOperation; |
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use ApiPlatform\Metadata\Operation; |
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use ApiPlatform\Metadata\Resource\Factory\ResourceMetadataCollectionFactoryInterface; |
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use ApiPlatform\Serializer\SerializerContextBuilderInterface; |
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use ApiPlatform\State\ProviderInterface; |
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use ApiPlatform\State\UriVariablesResolverTrait; |
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use ApiPlatform\Util\AttributesExtractor; |
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use ApiPlatform\Util\RequestParser; |
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use Silverback\ApiComponentsBundle\Entity\Component\Collection; |
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use Silverback\ApiComponentsBundle\Exception\OutOfBoundsException; |
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use Silverback\ApiComponentsBundle\Serializer\SerializeFormatResolver; |
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use Silverback\ApiComponentsBundle\Utility\ApiResourceRouteFinder; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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use Symfony\Component\HttpKernel\Exception\NotFoundHttpException; |
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use Symfony\Component\Serializer\Normalizer\NormalizerInterface; |
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/** |
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* @author Daniel West <[email protected]> |
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*/ |
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class CollectionOutputDataTransformer implements DataTransformerInterface |
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{ |
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use UriVariablesResolverTrait; |
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private ApiResourceRouteFinder $resourceRouteFinder; |
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private ProviderInterface $provider; |
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private RequestStack $requestStack; |
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private SerializerContextBuilderInterface $serializerContextBuilder; |
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private NormalizerInterface $itemNormalizer; |
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private SerializeFormatResolver $serializeFormatResolver; |
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private string $itemsPerPageParameterName; |
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private ResourceMetadataCollectionFactoryInterface $resourceMetadataCollectionFactory; |
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public function __construct( |
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ApiResourceRouteFinder $resourceRouteFinder, |
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ProviderInterface $provider, |
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RequestStack $requestStack, |
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SerializerContextBuilderInterface $serializerContextBuilder, |
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NormalizerInterface $itemNormalizer, |
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SerializeFormatResolver $serializeFormatResolver, |
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ResourceMetadataCollectionFactoryInterface $resourceMetadataCollectionFactory, |
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string $itemsPerPageParameterName |
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) { |
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$this->resourceRouteFinder = $resourceRouteFinder; |
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$this->provider = $provider; |
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$this->requestStack = $requestStack; |
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$this->serializerContextBuilder = $serializerContextBuilder; |
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$this->itemNormalizer = $itemNormalizer; |
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$this->serializeFormatResolver = $serializeFormatResolver; |
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$this->itemsPerPageParameterName = $itemsPerPageParameterName; |
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$this->resourceMetadataCollectionFactory = $resourceMetadataCollectionFactory; |
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} |
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public function supportsTransformation($data, string $to, array $context = []): bool |
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{ |
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return $data instanceof Collection && Collection::class === $to; |
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} |
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/** |
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* @param object|Collection $object |
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*/ |
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public function transform($object, string $to, array $context = []): Collection |
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{ |
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$parameters = $this->resourceRouteFinder->findByIri($object->getResourceIri()); |
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$attributes = AttributesExtractor::extractAttributes($parameters); |
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$request = $this->requestStack->getMainRequest(); |
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if (!$request) { |
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return $object; |
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} |
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// Fetch the collection with computed context |
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$resourceClass = $attributes['resource_class']; |
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$getCollectionOperation = $this->findGetCollectionOperation($resourceClass); |
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if (!$getCollectionOperation) { |
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return $object; |
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} |
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// Build context |
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$collectionContext = ['operation' => $getCollectionOperation]; |
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// Build filters |
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$filters = []; |
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if (($perPage = $object->getPerPage()) !== null) { |
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$filters[$this->itemsPerPageParameterName] = $perPage; |
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} |
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if (($defaultQueryParams = $object->getDefaultQueryParameters()) !== null) { |
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$filters += $defaultQueryParams; |
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} |
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if (null === $requestFilters = $request->attributes->get('_api_filters')) { |
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$queryString = RequestParser::getQueryString($request); |
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$requestFilters = $queryString ? RequestParser::parseRequestParams($queryString) : null; |
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} |
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if ($requestFilters) { |
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// not += because we want to overwrite with an empty string if provided in querystring. |
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// e.g. a default search value could be overridden by no search value |
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$filters = array_merge($filters, $requestFilters); |
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} |
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$collectionContext['filters'] = $filters; |
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// Compose context for provider |
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$collectionContext += $normalizationContext = $this->serializerContextBuilder->createFromRequest($request, true, $attributes); |
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try { |
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$uriVariables = $this->getOperationUriVariables($getCollectionOperation, $parameters, $resourceClass); |
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$collectionData = $this->provider->provide($resourceClass, $uriVariables, $getCollectionOperation->getName(), $collectionContext); |
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} catch (InvalidIdentifierException $e) { |
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throw new NotFoundHttpException('Invalid identifier value or configuration.', $e); |
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} |
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// Normalize the collection into an array |
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// Pagination disabled |
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if (\is_array($collectionData)) { |
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$collection = $collectionData; |
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} else { |
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if (!$collectionData instanceof \Traversable) { |
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throw new OutOfBoundsException('$collectionData should be Traversable'); |
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} |
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$collection = iterator_count($collectionData) ? $collectionData : []; |
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} |
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$format = $this->serializeFormatResolver->getFormatFromRequest($request); |
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$normalizedCollection = $this->itemNormalizer->normalize($collection, $format, $normalizationContext); |
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// Update the original collection resource |
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$object->setCollection($normalizedCollection); |
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return $object; |
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} |
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private function findGetCollectionOperation(string $resourceClass): ?Operation |
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{ |
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$metadata = $this->resourceMetadataCollectionFactory->create($resourceClass); |
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$it = $metadata->getIterator(); |
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/** @var ApiResource $apiResource */ |
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foreach ($it as $apiResource) { |
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$operations = $apiResource->getOperations(); |
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if ($operations) { |
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/** @var Operation $operation */ |
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foreach ($operations as $operation) { |
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if ($operation instanceof CollectionOperationInterface && HttpOperation::METHOD_GET === $operation->getMethod()) { |
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return $operation; |
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} |
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} |
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} |
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} |
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return null; |
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} |
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} |
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components-web-app /
api-components-bundle
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