public static function MeasurementItem::mainPropertyName in Physical Fields 8

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

src/Plugin/Field/FieldType/MeasurementItem.php, line 64

Class

MeasurementItem

Plugin implementation of the 'physical_measurement' field type.

Namespace

Drupal\physical\Plugin\Field\FieldType

Code

public static function mainPropertyName() {
  return NULL;
}