public ActionResult AddSignProduct()
        {
            SignProductModel model = new SignProductModel();

            ViewData["referer"] = ShopUtils.GetAdminRefererCookie();
            return(View(model));
        }
        public ActionResult AddSignProduct(SignProductModel model)
        {
            PartProductInfo partProductInfo = AdminProducts.AdminGetPartProductById(model.Pid);

            if (partProductInfo == null)
            {
                ModelState.AddModelError("Pid", "请选择商品");
            }

            if (AdminProducts.IsExistSignProduct(model.Sign, model.Pid))
            {
                ModelState.AddModelError("Pid", "此商品已经存在");
            }

            if (ModelState.IsValid)
            {
                AdminProducts.AddSignProduct(model.Sign, model.Pid);
                AddAdminOperateLog("添加签名商品", "添加签名商品,签名商品为:" + partProductInfo.Name);
                return(PromptView("签名商品添加成功"));
            }
            return(View(model));
        }