FieldStorageConfig::getMainPropertyName

public FieldStorageConfig::getMainPropertyName()

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 FieldStorageDefinitionInterface::getMainPropertyName

File

core/modules/field/src/Entity/FieldStorageConfig.php, line 765

Class

FieldStorageConfig

Defines the Field storage configuration entity.

Namespace

Drupal\field\Entity

Code

public function getMainPropertyName() {
  $class = $this->getFieldItemClass();
  return $class::mainPropertyName();
}