Chris@17: <?php
Chris@17: 
Chris@17: namespace Drupal\Tests\field\Traits;
Chris@17: 
Chris@17: use Drupal\field\Entity\FieldConfig;
Chris@17: use Drupal\field\Entity\FieldStorageConfig;
Chris@17: 
Chris@17: /**
Chris@17:  * Provides common functionality for the EntityReference test classes.
Chris@17:  */
Chris@17: trait EntityReferenceTestTrait {
Chris@17: 
Chris@17:   /**
Chris@17:    * Creates a field of an entity reference field storage on the specified bundle.
Chris@17:    *
Chris@17:    * @param string $entity_type
Chris@17:    *   The type of entity the field will be attached to.
Chris@17:    * @param string $bundle
Chris@17:    *   The bundle name of the entity the field will be attached to.
Chris@17:    * @param string $field_name
Chris@17:    *   The name of the field; if it already exists, a new instance of the existing
Chris@17:    *   field will be created.
Chris@17:    * @param string $field_label
Chris@17:    *   The label of the field.
Chris@17:    * @param string $target_entity_type
Chris@17:    *   The type of the referenced entity.
Chris@17:    * @param string $selection_handler
Chris@17:    *   The selection handler used by this field.
Chris@17:    * @param array $selection_handler_settings
Chris@17:    *   An array of settings supported by the selection handler specified above.
Chris@17:    *   (e.g. 'target_bundles', 'sort', 'auto_create', etc).
Chris@17:    * @param int $cardinality
Chris@17:    *   The cardinality of the field.
Chris@17:    *
Chris@17:    * @see \Drupal\Core\Entity\Plugin\EntityReferenceSelection\SelectionBase::buildConfigurationForm()
Chris@17:    */
Chris@17:   protected function createEntityReferenceField($entity_type, $bundle, $field_name, $field_label, $target_entity_type, $selection_handler = 'default', $selection_handler_settings = [], $cardinality = 1) {
Chris@17:     // Look for or add the specified field to the requested entity bundle.
Chris@17:     if (!FieldStorageConfig::loadByName($entity_type, $field_name)) {
Chris@17:       FieldStorageConfig::create([
Chris@17:         'field_name' => $field_name,
Chris@17:         'type' => 'entity_reference',
Chris@17:         'entity_type' => $entity_type,
Chris@17:         'cardinality' => $cardinality,
Chris@17:         'settings' => [
Chris@17:           'target_type' => $target_entity_type,
Chris@17:         ],
Chris@17:       ])->save();
Chris@17:     }
Chris@17:     if (!FieldConfig::loadByName($entity_type, $bundle, $field_name)) {
Chris@17:       FieldConfig::create([
Chris@17:         'field_name' => $field_name,
Chris@17:         'entity_type' => $entity_type,
Chris@17:         'bundle' => $bundle,
Chris@17:         'label' => $field_label,
Chris@17:         'settings' => [
Chris@17:           'handler' => $selection_handler,
Chris@17:           'handler_settings' => $selection_handler_settings,
Chris@17:         ],
Chris@17:       ])->save();
Chris@17:     }
Chris@17:   }
Chris@17: 
Chris@17: }