protected function ResourceTypeRepository::isReferenceFieldDefinition in Drupal 8

Same name and namespace in other branches

9 core/modules/jsonapi/src/ResourceType/ResourceTypeRepository.php \Drupal\jsonapi\ResourceType\ResourceTypeRepository::isReferenceFieldDefinition()

Determines if a given field definition is a reference field.

Parameters

\Drupal\Core\Field\FieldDefinitionInterface $field_definition: The field definition to inspect.

Return value

bool TRUE if the field definition is found to be a reference field. FALSE otherwise.

2 calls to ResourceTypeRepository::isReferenceFieldDefinition()

ResourceTypeRepository::calculateRelatableResourceTypes in core/modules/jsonapi/src/ResourceType/ResourceTypeRepository.php: Calculates relatable JSON:API resource types for a given resource type.
ResourceTypeRepository::getFields in core/modules/jsonapi/src/ResourceType/ResourceTypeRepository.php: Gets the field mapping for the given field names and entity type + bundle.

File

core/modules/jsonapi/src/ResourceType/ResourceTypeRepository.php, line 488

Class

ResourceTypeRepository: Provides a repository of all JSON:API resource types.

Namespace

Drupal\jsonapi\ResourceType

Code

protected function isReferenceFieldDefinition(FieldDefinitionInterface $field_definition) {
  static $field_type_is_reference = [];
  if (isset($field_type_is_reference[$field_definition
    ->getType()])) {
    return $field_type_is_reference[$field_definition
      ->getType()];
  }

  /* @var \Drupal\Core\Field\TypedData\FieldItemDataDefinition $item_definition */
  $item_definition = $field_definition
    ->getItemDefinition();
  $main_property = $item_definition
    ->getMainPropertyName();
  $property_definition = $item_definition
    ->getPropertyDefinition($main_property);
  return $field_type_is_reference[$field_definition
    ->getType()] = $property_definition instanceof DataReferenceTargetDefinition;
}

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