public static function EntityReferenceItem::mainPropertyName in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::mainPropertyName()
2. 10 core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php \Drupal\Core\Field\Plugin\Field\FieldType\EntityReferenceItem::mainPropertyName()

Returns the name of the main property, if any.

Some field items consist mainly of one main property, e.g. the value of a text field or the target_id of an entity reference. If the field item has no main property, the method returns NULL.

Return value

string|null The name of the value property, or NULL if there is none.

Overrides FieldItemBase::mainPropertyName

See also

\Drupal\Core\Field\BaseFieldDefinition

File

core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php, line 115

Class

EntityReferenceItem

Defines the 'entity_reference' entity field type.

Namespace

Drupal\Core\Field\Plugin\Field\FieldType

Code

public static function mainPropertyName() {
  return 'target_id';
}