Version 1

[yaffs-website] / web / core / lib / Drupal / Core / Field / EntityReferenceFieldItemList.php

diff --git a/web/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php b/web/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
new file mode 100644 (file)
index 0000000..0a53d98
--- /dev/null
+++ b/web/core/lib/Drupal/Core/Field/EntityReferenceFieldItemList.php
@@ -0,0 +1,131 @@
+<?php
+
+namespace Drupal\Core\Field;
+
+use Drupal\Core\Entity\FieldableEntityInterface;
+use Drupal\Core\Form\FormStateInterface;
+
+/**
+ * Defines a item list class for entity reference fields.
+ */
+class EntityReferenceFieldItemList extends FieldItemList implements EntityReferenceFieldItemListInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getConstraints() {
+    $constraints = parent::getConstraints();
+    $constraint_manager = $this->getTypedDataManager()->getValidationConstraintManager();
+    $constraints[] = $constraint_manager->create('ValidReference', []);
+    return $constraints;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function referencedEntities() {
+    if (empty($this->list)) {
+      return [];
+    }
+
+    // Collect the IDs of existing entities to load, and directly grab the
+    // "autocreate" entities that are already populated in $item->entity.
+    $target_entities = $ids = [];
+    foreach ($this->list as $delta => $item) {
+      if ($item->target_id !== NULL) {
+        $ids[$delta] = $item->target_id;
+      }
+      elseif ($item->hasNewEntity()) {
+        $target_entities[$delta] = $item->entity;
+      }
+    }
+
+    // Load and add the existing entities.
+    if ($ids) {
+      $target_type = $this->getFieldDefinition()->getSetting('target_type');
+      $entities = \Drupal::entityManager()->getStorage($target_type)->loadMultiple($ids);
+      foreach ($ids as $delta => $target_id) {
+        if (isset($entities[$target_id])) {
+          $target_entities[$delta] = $entities[$target_id];
+        }
+      }
+      // Ensure the returned array is ordered by deltas.
+      ksort($target_entities);
+    }
+
+    return $target_entities;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function processDefaultValue($default_value, FieldableEntityInterface $entity, FieldDefinitionInterface $definition) {
+    $default_value = parent::processDefaultValue($default_value, $entity, $definition);
+
+    if ($default_value) {
+      // Convert UUIDs to numeric IDs.
+      $uuids = [];
+      foreach ($default_value as $delta => $properties) {
+        if (isset($properties['target_uuid'])) {
+          $uuids[$delta] = $properties['target_uuid'];
+        }
+      }
+      if ($uuids) {
+        $target_type = $definition->getSetting('target_type');
+        $entity_ids = \Drupal::entityQuery($target_type)
+          ->condition('uuid', $uuids, 'IN')
+          ->execute();
+        $entities = \Drupal::entityManager()
+          ->getStorage($target_type)
+          ->loadMultiple($entity_ids);
+
+        $entity_uuids = [];
+        foreach ($entities as $id => $entity) {
+          $entity_uuids[$entity->uuid()] = $id;
+        }
+        foreach ($uuids as $delta => $uuid) {
+          if (isset($entity_uuids[$uuid])) {
+            $default_value[$delta]['target_id'] = $entity_uuids[$uuid];
+            unset($default_value[$delta]['target_uuid']);
+          }
+          else {
+            unset($default_value[$delta]);
+          }
+        }
+      }
+
+      // Ensure we return consecutive deltas, in case we removed unknown UUIDs.
+      $default_value = array_values($default_value);
+    }
+    return $default_value;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultValuesFormSubmit(array $element, array &$form, FormStateInterface $form_state) {
+    $default_value = parent::defaultValuesFormSubmit($element, $form, $form_state);
+
+    // Convert numeric IDs to UUIDs to ensure config deployability.
+    $ids = [];
+    foreach ($default_value as $delta => $properties) {
+      if (isset($properties['entity']) && $properties['entity']->isNew()) {
+        // This may be a newly created term.
+        $properties['entity']->save();
+        $default_value[$delta]['target_id'] = $properties['entity']->id();
+        unset($default_value[$delta]['entity']);
+      }
+      $ids[] = $default_value[$delta]['target_id'];
+    }
+    $entities = \Drupal::entityManager()
+      ->getStorage($this->getSetting('target_type'))
+      ->loadMultiple($ids);
+
+    foreach ($default_value as $delta => $properties) {
+      unset($default_value[$delta]['target_id']);
+      $default_value[$delta]['target_uuid'] = $entities[$properties['target_id']]->uuid();
+    }
+    return $default_value;
+  }
+
+}