function FieldNormalizer::denormalize

File

core/modules/jsonapi/src/Normalizer/FieldNormalizer.php, line 38

Class

FieldNormalizer

Converts the Drupal field structure to a JSON:API array structure.

Namespace

Code

public function denormalize($data, $class, $format = NULL, array $context = []) : mixed {
  $field_definition = $context['field_definition'];
  assert($field_definition instanceof FieldDefinitionInterface);
  $resource_type = $context['resource_type'];
  assert($resource_type instanceof ResourceType);
  // If $data contains items (recognizable by numerical array keys, which
  // Drupal's Field API calls "deltas"), then it already is itemized; it's not
  // using the simplified JSON structure that JSON:API generates.
  $is_already_itemized = is_array($data) && array_reduce(array_keys($data), function ($carry, $index) {
    return $carry && is_numeric($index);
  }, TRUE);
  $itemized_data = $is_already_itemized ? $data : [
    0 => $data,
  ];
  // Single-cardinality fields don't need itemization.
  $field_item_class = $field_definition->getItemDefinition()
    ->getClass();
  if (count($itemized_data) === 1 && $resource_type->getFieldByInternalName($field_definition->getName())
    ->hasOne()) {
    return $this->serializer
      ->denormalize($itemized_data[0], $field_item_class, $format, $context);
  }
  $data_internal = [];
  foreach ($itemized_data as $delta => $field_item_value) {
    $data_internal[$delta] = $this->serializer
      ->denormalize($field_item_value, $field_item_class, $format, $context);
  }
  return $data_internal;
}