public function ResourceObjectNormalizer::normalize in JSON:API 8.2

File

src/Normalizer/ResourceObjectNormalizer.php, line 37

Class

ResourceObjectNormalizer

Converts the JSON:API module ResourceObject into a JSON:API array structure.

Namespace

Drupal\jsonapi\Normalizer

Code

public function normalize($object, $format = NULL, array $context = []) {
  assert($object instanceof ResourceObject);

  // If the fields to use were specified, only output those field values.
  $context['resource_object'] = $object;
  $resource_type = $object
    ->getResourceType();
  $resource_type_name = $resource_type
    ->getTypeName();
  $fields = $object
    ->getFields();

  // Get the bundle ID of the requested resource. This is used to determine if
  // this is a bundle level resource or an entity level resource.
  if (!empty($context['sparse_fieldset'][$resource_type_name])) {
    $field_names = $context['sparse_fieldset'][$resource_type_name];
  }
  else {
    $field_names = array_keys($fields);
  }
  $normalizer_values = [];
  foreach ($fields as $field_name => $field) {
    $in_sparse_fieldset = in_array($field_name, $field_names);

    // Omit fields not listed in sparse fieldsets.
    if (!$in_sparse_fieldset) {
      continue;
    }
    $normalizer_values[$field_name] = $this
      ->serializeField($field, $context, $format);
  }
  $relationship_field_names = array_keys($resource_type
    ->getRelatableResourceTypes());
  return CacheableNormalization::aggregate([
    'type' => CacheableNormalization::permanent($resource_type
      ->getTypeName()),
    'id' => CacheableNormalization::permanent($object
      ->getId()),
    'attributes' => CacheableNormalization::aggregate(array_diff_key($normalizer_values, array_flip($relationship_field_names)))
      ->omitIfEmpty(),
    'relationships' => CacheableNormalization::aggregate(array_intersect_key($normalizer_values, array_flip($relationship_field_names)))
      ->omitIfEmpty(),
    'links' => $this->serializer
      ->normalize($object
      ->getLinks(), $format, $context)
      ->omitIfEmpty(),
  ])
    ->withCacheableDependency($object);
}