whitelabel-8.x-2.x-dev/src/Plugin/EntityReferenceSelection/WhiteLabelSelection.php

<?php

namespace Drupal\whitelabel\Plugin\EntityReferenceSelection;

use Drupal\Core\Entity\Plugin\EntityReferenceSelection\DefaultSelection;
use Drupal\Core\Form\FormStateInterface;

/**
 * Default plugin implementation of the Entity Reference Selection plugin.
 *
 * @EntityReferenceSelection(
 *   id = "default:whitelabel",
 *   label = @Translation("White label"),
 *   group = "default",
 *   entity_types = {"whitelabel"},
 *   weight = 10
 * )
 */
class WhiteLabelSelection extends DefaultSelection {

  /**
   * {@inheritdoc}
   */
  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".
      'auto_create' => TRUE,
    ] + parent::defaultConfiguration();
  }

  /**
   * {@inheritdoc}
   */
  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
    // Do not show any form. There is nothing to configure.
    return [];
  }

}