function DefaultSelection::defaultConfiguration

Overrides SelectionPluginBase::defaultConfiguration

File

core/lib/Drupal/Core/Entity/Plugin/EntityReferenceSelection/DefaultSelection.php, line 142

Class

DefaultSelection

Default plugin implementation of the Entity Reference Selection plugin.

Namespace

Code

public function defaultConfiguration() {
    return [
        // For the 'target_bundles' setting, a NULL value is equivalent to "allow
        // entities from any bundle to be referenced" and an empty array value is
        // equivalent to "no entities from any bundle can be referenced". The
        // reason for NULL and an empty array having a different meaning is to
        // correctly handle config updates.
        // For example, in the scenario where a single target bundle is allowed,
        // and that bundle is then deleted, the automatic removal of that bundle
        // from the entity reference field's settings leaves an empty array.
        // This empty array must therefore indicate that no bundles are allowed,
        // as otherwise the field would suddenly allow all bundles.
'target_bundles' => NULL,
        'sort' => [
            'field' => '_none',
            'direction' => 'ASC',
        ],
        'auto_create' => FALSE,
        'auto_create_bundle' => NULL,
    ] + parent::defaultConfiguration();
}