diff --git a/ground/classes/Model.php b/ground/classes/Model.php
index 2533b6d..c1f8645 100644
--- a/ground/classes/Model.php
+++ b/ground/classes/Model.php
@@ -157,7 +157,11 @@ abstract class Model
 			if (isset($params['noKeys'])) {
 				$ready[] = isset($params['asArray']) && $params['asArray'] ? $row : new $calledClass($row);
 			} else {
-				$ready[$row[$this->_primaryKey_]] = isset($params['asArray']) && $params['asArray'] ? $row : new $calledClass($row);
+				if (isset($params['asArrayOf'])) {
+					$ready[] = isset($params['asArray']) && $params['asArray'] ? $row : new $calledClass($row);
+				} else {
+					$ready[$row[$this->_primaryKey_]] = isset($params['asArray']) && $params['asArray'] ? $row : new $calledClass($row);
+				}
 			}
 		}
 
diff --git a/ground/controllers/JsonController.php b/ground/controllers/JsonController.php
index 545e977..5615831 100644
--- a/ground/controllers/JsonController.php
+++ b/ground/controllers/JsonController.php
@@ -93,7 +93,7 @@ class JsonController extends Controller
 	 */
 	static function actionCategories()
 	{
-		$categories = Category::model()->getAll(array('order' => 'ord ASC', 'asArray' => true));
+		$categories = Category::model()->getAll(array('order' => 'ord ASC', 'asArray' => true, 'asArrayOf' => true));
 
 		self::renderPartial('json.php', array(
 			'data' => $categories,