public ActionResult NodeSingleEdit(NodeModel model)
        {
            ////檢查內容無障礙是否通過
            if (!AccessibilityUtil.CheckFreeGO(model.Content))
            {
                model.ShowFreeGOMsg = true;
                model.FreeGOColumnName = "Content";
            }

            model.Update();
            return View(model);
        }