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<?php |
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/* |
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* This file is part of the API Platform project. |
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* |
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* (c) Kévin Dunglas <[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 ApiPlatform\Core\GraphQl\Serializer; |
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use ApiPlatform\Core\Metadata\Resource\Factory\ResourceMetadataFactoryInterface; |
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use ApiPlatform\Core\Metadata\Resource\ResourceMetadata; |
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use ApiPlatform\Core\Serializer\SerializerContextProviderInterface; |
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use GraphQL\Type\Definition\ResolveInfo; |
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use Symfony\Component\Serializer\NameConverter\NameConverterInterface; |
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/** |
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* Provides the context used by the Symfony Serializer. |
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* |
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* @experimental |
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* |
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* @author Alan Poulain <[email protected]> |
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*/ |
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final class SerializerContextProvider implements SerializerContextProviderInterface |
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{ |
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private $resourceMetadataFactory; |
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private $nameConverter; |
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public function __construct(ResourceMetadataFactoryInterface $resourceMetadataFactory, ?NameConverterInterface $nameConverter) |
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{ |
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$this->resourceMetadataFactory = $resourceMetadataFactory; |
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$this->nameConverter = $nameConverter; |
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} |
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public function create(?string $resourceClass, string $operationName, bool $normalization, array $resolverContext): array |
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{ |
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$resourceMetadata = $resourceClass ? $this->resourceMetadataFactory->create($resourceClass) : null; |
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$context = [ |
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'resource_class' => $resourceClass, |
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'graphql_operation_name' => $operationName, |
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]; |
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if ($normalization) { |
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$context['attributes'] = $this->fieldsToAttributes($resourceMetadata, $resolverContext); |
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} |
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if (isset($resolverContext['fields'])) { |
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$context['no_resolver_data'] = true; |
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} |
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if ($resourceMetadata) { |
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$context['input'] = $resourceMetadata->getGraphqlAttribute($operationName, 'input', null, true); |
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$context['output'] = $resourceMetadata->getGraphqlAttribute($operationName, 'output', null, true); |
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$key = $normalization ? 'normalization_context' : 'denormalization_context'; |
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$context = array_merge($resourceMetadata->getGraphqlAttribute($operationName, $key, [], true), $context); |
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} |
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return $context; |
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} |
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/** |
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* Retrieves fields, recursively replaces the "_id" key (the raw id) by "id" (the name of the property expected by the Serializer) and flattens edge and node structures (pagination). |
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*/ |
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private function fieldsToAttributes(?ResourceMetadata $resourceMetadata, array $context): array |
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{ |
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if (isset($context['fields'])) { |
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$fields = $context['fields']; |
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} else { |
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/** @var ResolveInfo $info */ |
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$info = $context['info']; |
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$fields = $info->getFieldSelection(PHP_INT_MAX); |
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} |
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$attributes = $this->replaceIdKeys($fields['edges']['node'] ?? $fields); |
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if ($context['is_mutation'] || $context['is_subscription']) { |
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if (!$resourceMetadata) { |
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throw new \LogicException('ResourceMetadata should always exist for a mutation or a subscription.'); |
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} |
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$wrapFieldName = lcfirst($resourceMetadata->getShortName()); |
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return $attributes[$wrapFieldName] ?? []; |
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} |
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return $attributes; |
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} |
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private function replaceIdKeys(array $fields): array |
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{ |
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$denormalizedFields = []; |
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foreach ($fields as $key => $value) { |
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if ('_id' === $key) { |
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$denormalizedFields['id'] = $fields['_id']; |
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continue; |
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} |
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$denormalizedFields[$this->denormalizePropertyName((string) $key)] = \is_array($fields[$key]) ? $this->replaceIdKeys($fields[$key]) : $value; |
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} |
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return $denormalizedFields; |
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} |
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private function denormalizePropertyName(string $property): string |
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{ |
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return null !== $this->nameConverter ? $this->nameConverter->denormalize($property) : $property; |
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} |
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} |
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api-platform /
core
