public function EntityReferenceFieldNormalizer::normalize in JSON:API 8.2
Same name and namespace in other branches
- 8 src/Normalizer/EntityReferenceFieldNormalizer.php \Drupal\jsonapi\Normalizer\EntityReferenceFieldNormalizer::normalize()
Overrides FieldNormalizer::normalize
File
- src/
Normalizer/ EntityReferenceFieldNormalizer.php, line 34
Class
- EntityReferenceFieldNormalizer
- Normalizer class specific for entity reference field objects.
Namespace
Drupal\jsonapi\NormalizerCode
public function normalize($field, $format = NULL, array $context = []) {
assert($field instanceof EntityReferenceFieldItemListInterface);
// Build the relationship object based on the Entity Reference and normalize
// that object instead.
$definition = $field
->getFieldDefinition();
$cardinality = $definition
->getFieldStorageDefinition()
->getCardinality();
$resource_identifiers = array_filter(ResourceIdentifier::toResourceIdentifiers($field
->filterEmptyItems()), function (ResourceIdentifierInterface $resource_identifier) {
return !$resource_identifier
->getResourceType()
->isInternal();
});
$context['field_name'] = $field
->getName();
$normalized_items = CacheableNormalization::aggregate($this->serializer
->normalize($resource_identifiers, $format, $context));
assert($context['resource_object'] instanceof ResourceObject);
$link_cacheability = new CacheableMetadata();
$links = array_map(function (Url $link) use ($link_cacheability) {
$href = $link
->setAbsolute()
->toString(TRUE);
$link_cacheability
->addCacheableDependency($href);
return [
'href' => $href
->getGeneratedUrl(),
];
}, static::getRelationshipLinks($context['resource_object'], $field
->getName()));
$data_normalization = $normalized_items
->getNormalization();
$normalization = [
// Empty 'to-one' relationships must be NULL.
// Empty 'to-many' relationships must be an empty array.
// @link http://jsonapi.org/format/#document-resource-object-linkage
'data' => $cardinality === 1 ? array_shift($data_normalization) : $data_normalization,
];
if (!empty($links)) {
$normalization['links'] = $links;
}
return (new CacheableNormalization($normalized_items, $normalization))
->withCacheableDependency($link_cacheability);
}