public function actionCreate() { $nParentId = Yii::app()->request->getParam('parent', 0); $nPositionId = Yii::app()->request->getParam('position', NULL); $sName = Yii::app()->request->getParam('name', 'New node'); $nItemId = Item::treeCreate($nParentId, $nPositionId, $sName); if ($nItemId) { $this->jsonOutput(['id' => $nItemId]); } $this->jsonOutput(['message' => 'Cannot add item.'], 'error'); }