CustomField.get - use CachedDAOGetAction

Civi/Api4/Action/CustomField/Get.php

@@ -0,0 +1,30 @@
+<?php
+
+/*
+ +--------------------------------------------------------------------+
+ | Copyright CiviCRM LLC. All rights reserved.                        |
+ |                                                                    |
+ | This work is published under the GNU AGPLv3 license with some      |
+ | permitted exceptions and without any warranty. For full license    |
+ | and copyright information, see https://civicrm.org/licensing       |
+ +--------------------------------------------------------------------+
+ */
+
+namespace Civi\Api4\Action\CustomField;
+
+/**
+ * @inheritDoc
+ */
+class Get extends \Civi\Api4\Generic\CachedDAOGetAction {
+
+  /**
+   * @inheritdoc
+   *
+   * Flatten field records from the CustomGroup cache
+   */
+  protected function getCachedRecords(): array {
+    $groups = \CRM_Core_BAO_CustomGroup::getAll();
+    return array_merge(...array_map(fn ($group) => $group['fields'], $groups));
+  }
+
+}

Civi/Api4/CustomField.php

@@ -24,6 +24,15 @@ class CustomField extends Generic\DAOEntity {
   use Generic\Traits\ManagedEntity;
   use Generic\Traits\SortableEntity;
 
+  /**
+   * @param bool $checkPermissions
+   * @return Action\CustomField\Get
+   */
+  public static function get($checkPermissions = TRUE) {
+    return (new Action\CustomField\Get(__CLASS__, __FUNCTION__))
+      ->setCheckPermissions($checkPermissions);
+  }
+
   /**
    * @param bool $checkPermissions
    * @return Action\CustomField\Create