ASP.NET MVC 3 自定义操作过滤器 - 如何将传入模型添加到 TempData？

发布于 2024-11-01 02:38:22 字数 657 浏览 1 评论 0原文

我正在尝试构建一个自定义操作过滤器，该过滤器从过滤器上下文中获取传入模型，将其添加到临时数据中，然后执行“其他操作”。

我的操作方法如下所示：

[HttpPost]
[MyCustomAttribute]
public ActionResult Create(MyViewModel model)
{
   // snip for brevity...
}

现在，我想将 model 添加到 TempData，在模型绑定启动并转换将值集合形成到 MyViewModel 中。

我该怎么做？

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
   if (!filterContext.Controller.ViewData.ModelState.IsValid)
      return;

   var model = filterContext.????; // how do i get the model-bounded object?
   filterContext.TempData.Add(someKey, model);
}

原文

I'm trying to build a custom action filter which grabs the incoming model out of the filter context, adds it to tempdata, then does "other stuff".

My action method looks like this:

[HttpPost]
[MyCustomAttribute]
public ActionResult Create(MyViewModel model)
{
   // snip for brevity...
}

Now, i want to add the model to TempData, after the model-binding has kicked in and transformed the form value collection into MyViewModel.

How do i do that?

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
   if (!filterContext.Controller.ViewData.ModelState.IsValid)
      return;

   var model = filterContext.????; // how do i get the model-bounded object?
   filterContext.TempData.Add(someKey, model);
}

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烟凡古楼 2024-11-08 02:38:22

明白了 - 希望这是正确的做法：

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
   if (!filterContext.Controller.ViewData.ModelState.IsValid)
      return;

   var model = filterContext.ActionParameters.SingleOrDefault(ap => ap.Key == "model").Value;
   if (model != null)
   {
      // Found the model - add it to tempdata
      filterContext.Controller.TempData.Add(TempDataKey, model);
   }
}

Got it - hopefully this is the correct way of doing it:

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
   if (!filterContext.Controller.ViewData.ModelState.IsValid)
      return;

   var model = filterContext.ActionParameters.SingleOrDefault(ap => ap.Key == "model").Value;
   if (model != null)
   {
      // Found the model - add it to tempdata
      filterContext.Controller.TempData.Add(TempDataKey, model);
   }
}

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