ResourceIdentifierNormalizer.php in JSON:API Extras 8.3
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src/Normalizer/ResourceIdentifierNormalizer.php
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<?php
namespace Drupal\jsonapi_extras\Normalizer;
use Drupal\Core\Entity\EntityInterface;
use Drupal\Core\Field\EntityReferenceFieldItemListInterface;
use Drupal\jsonapi\JsonApiResource\ResourceIdentifier;
use Drupal\jsonapi\JsonApiResource\ResourceObject;
use Drupal\jsonapi\Normalizer\Value\CacheableNormalization;
use Drupal\jsonapi\ResourceType\ResourceTypeRepositoryInterface;
use Drupal\jsonapi_extras\ResourceType\ConfigurableResourceType;
use Shaper\Util\Context;
class ResourceIdentifierNormalizer extends JsonApiNormalizerDecoratorBase {
protected $resourceTypeRepository;
public function __construct($inner, ResourceTypeRepositoryInterface $resource_type_repository) {
parent::__construct($inner);
$this->resourceTypeRepository = $resource_type_repository;
}
public function normalize($field, $format = NULL, array $context = []) {
assert($field instanceof ResourceIdentifier);
$normalized_output = parent::normalize($field, $format, $context);
assert($normalized_output instanceof CacheableNormalization);
if (!isset($context['resource_object'])) {
return $normalized_output;
}
$resource_object = $context['resource_object'];
$resource_type = $resource_object
->getResourceType();
$field_name = $this
->guessFieldName($field
->getId(), $resource_object);
if (!$field_name) {
return $normalized_output;
}
$enhancer = $resource_type
->getFieldEnhancer($field_name);
if (!$enhancer) {
return $normalized_output;
}
$context['field_resource_identifier'] = $field;
$transformed = $enhancer
->undoTransform($normalized_output
->getNormalization(), new Context($context));
return new CacheableNormalization($normalized_output, array_intersect_key($transformed, array_flip([
'id',
'type',
'meta',
])));
}
protected function guessFieldName($uuid, ResourceObject $resource_object) {
$resource_type = $resource_object
->getResourceType();
assert($resource_type instanceof ConfigurableResourceType);
$reference_field_names = array_keys($resource_type
->getRelatableResourceTypes());
$ref_enhancers = array_filter(array_map(function ($public_field_name) use ($resource_type) {
return $resource_type
->getFieldEnhancer($public_field_name, 'publicName');
}, array_combine($reference_field_names, $reference_field_names)));
$reference_fields = array_intersect_key($resource_object
->getFields(), array_flip(array_keys($ref_enhancers)));
$reference_fields = array_filter($reference_fields, function ($reference_field) {
return $reference_field instanceof EntityReferenceFieldItemListInterface;
});
return array_reduce($reference_fields, function ($field_name, EntityReferenceFieldItemListInterface $object_field) use ($uuid) {
if ($field_name) {
return $field_name;
}
$referenced_entities = $object_field
->referencedEntities();
$matches = array_filter($referenced_entities, function (EntityInterface $referenced_entity) use ($uuid) {
return $uuid === $referenced_entity
->uuid();
});
return empty($matches) ? NULL : $object_field
->getName();
});
}
}