我正在将一个列表传递给视图。在视图中,我需要传回该列表。它包括一个可编辑的复选框,这是我真正需要的项目。显示的所有其他字段仅用于只读目的。如果用户想要将项目指定为许可,则他们选中 isClearance 复选框。因此,当他们点击保存按钮时,它会点击 HttpPost Index()。但是,它传回一个空值。如果我将它更改为只是一个模型对象,而不是列表,它就可以正常工作。
这是控制器索引:
public ActionResult Index()
{
List<ClearanceViewModel> cc = new List<ClearanceViewModel>();
ClearanceViewModel c = new ClearanceViewModel();
c.sku = "123";
c.title = "Test1";
c.includeOnSite = true;
c.productID = 123;
c.salePrice = Convert.ToDecimal(2.99);
c.RetailPrice = Convert.ToDecimal(4.99);
c.isClearance = false;
cc.Add(c);
c.sku = "123";
c.title = "Test1";
c.includeOnSite = true;
c.productID = 123;
c.salePrice = Convert.ToDecimal(2.99);
c.RetailPrice = Convert.ToDecimal(4.99);
c.isClearance = false;
cc.Add(c);
return View(cc);
}
这是视图:
@model List<PMS.Models.ClearanceViewModel>
@{
ViewBag.title = "Clearance List";
}
<fieldset>
<legend><span>Clearance List</span></legend>
@using (Html.BeginForm())
{
if (Model.Count() > 0)
{
<table class="list">
<tr>
<th>Sku</th>
<th>Title</th>
<th>Include On Site</th>
<th>Sale price</th>
<th>Retail Price</th>
<th>Quantity</th>
<th>Clearance</th>
</tr>
@foreach(var item in Model)
{
@Html.HiddenFor(modelItem => item.productID);
<tr>
<td>@Html.DisplayFor(modelItem => item.sku)</td>
<td>@Html.DisplayFor(modelItem => item.title)</td>
<td>@Html.DisplayFor(modelItem => item.includeOnSite)</td>
<td>@Html.DisplayFor(modelItem => item.salePrice)</td>
<td>@Html.DisplayFor(modelItem => item.RetailPrice)</td>
<td>@Html.DisplayFor(modelItem => item.quantity)</td>
<td>@Html.EditorFor(modelItem => item.isClearance)</td>
</tr>
}
</table>
<p>
<input type="submit" value="Save" />
</p>
}
}
</fieldset>
这是控制器中的 HttpPost(clearanceModel 在到达 foreach 循环时为空,此时它应该有一个项目列表):
[HttpPost]
public ActionResult Index(List<ClearanceViewModel> clearanceModel)
{
foreach (ClearanceViewModel item in clearanceModel)
{
if (item.isClearance == true)
{
// get the product object, so we can add it to the product Promotion of clearance
var product = _unitOfWork.ProductRepository.Get(filter: p => p.productID == item.productID).FirstOrDefault();
// Make sure that it isn't already in the product promotion for clearance
var productPromotion = _unitOfWork.ProductPromotionRepository.Get(filter: pp => pp.productID == product.productID && pp.promotion.Name == "Clearance").FirstOrDefault();
//add the product promotion
if (productPromotion == null)
{
// get the clearance promotion
var promotion = _unitOfWork.PromotionRepository.Get(filter: pr => pr.Name == "Clearance").FirstOrDefault();
if (promotion != null)
{
ProductPromotion promo = new ProductPromotion();
promo.productID = product.productID;
promo.promotionID = promotion.promotionID;
promo.onDate = DateTime.Now;
promo.offDate = null;
promo.canOverwrite = true;
_unitOfWork.ProductPromotionRepository.Create(promo);
_unitOfWork.SaveChanges();
}
}
}
}