Create user/group create/delete functions and have the scaffolding use them.

modules/user/helpers/group.php

@@ -0,0 +1,52 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+/**
+ * This is the API for handling groups.
+ *
+ * Note: by design, this class does not do any permission checking.
+ */
+class group_Core {
+  /**
+   * Create a new group.
+   *
+   * @param string  $name
+   * @return Group_Model
+   */
+  static function create($name) {
+    $group = ORM::factory("group");
+    if ($group->loaded) {
+      throw new Exception("@todo GROUP_ALREADY_EXISTS $name");
+    }
+
+    $group->name = $name;
+    $group->save();
+    return $group;
+  }
+
+  /**
+   * Delete a group
+   *
+   * @param string $name the group name
+   */
+  static function delete($name) {
+    ORM::factory("group")->where("name", $name)->find()->delete();
+  }
+}