我如何使用editortemplates在MVC3复杂的类型？ [英] How do I use editortemplates in MVC3 for complex types?

问题描述

我有两个班，增值税和产品。产品具有IVat的属性。我想使用的编辑器模板MVC创建/编辑产品时显示所有的还原对象的下拉列表。对于我的亲爱的生活，我不能得到这个工作。

I have two classes, Vat and Product. Product has a property of IVat. I am trying to use editor templates in MVC to display a dropdown list of all the Vat objects when creating/editing a Product. For the dear life of me I cannot get this working.

我有以下的code，其显示的下拉但是当表单被提交它不设置瓮的产品。

I have the following code which displays the dropdown but it does not set the Vat for the Product when the form gets submitted.

控制器：

IList<IVatRate> vatRates = SqlDataRepository.VatRates.Data.GetAllResults();
ViewBag.VatRates = new SelectList(vatRates, "Id", "Description");

Add.cshtml

Add.cshtml

@Html.EditorFor(model => model.VatRate.Id, "VatSelector", (SelectList)ViewBag.VatRates)

VatSelector.cshtml

VatSelector.cshtml

@model SelectList
@Html.DropDownList(
        String.Empty /* */,
            (SelectList)ViewBag.Suppliers, 
        Model
    )

我将不胜感激，如果任何人都可以阐明这一些轻，甚至点我到网上的某个地方......我一直在坚持这一相当，现在几天就一个很好的例子。

I would be grateful if anyone can shed some light on this or even point me to a good example on the web somewhere...I have been stuck with this for quite a few days now.

推荐答案

，因为它使事情这么多，而不是ViewBag，更容易我会使用强类型的视图和视图模型

I would use strongly typed views and view models as it makes things so much easier rather than ViewBag.

因此​​，与视图模型启动：

So start with a view model:

public class VatRateViewModel
{
    public string SelectedVatRateId { get; set; }
    public IEnumerable<IVatRate> Rates { get; set; }
}

然后控制器：

public class HomeController: Controller
{
    public ActionResult Index()
    {
        var model = new VatRateViewModel
        {
            Rates = SqlDataRepository.VatRates.Data.GetAllResults()
        };
        return View(model);
    }

    [HttpPost]
    public ActionResult Index(VatRateViewModel model)
    {
        // model.SelectedVatRateId will contain the selected vat rate id
        ...
    }
}

查看：

@model VatRateViewModel
@using (Html.BeginForm())
{
    @Html.DropDownListFor(
        x => x.SelectedVatRateId,
        new SelectList(Model.Rates, "Id", "Description")
    )
    <input type="submit" value="OK" />
}

如果你想使用的编辑器模板的VatRateViewModel你可以定义一个在〜/查看/共享/ EditorTemplates / VatRateViewModel.cshtml ：

@model VatRateViewModel
@Html.DropDownListFor(
    x => x.SelectedVatRateId,
    new SelectList(Model.Rates, "Id", "Description")
)

然后，每当某个地方你有类型的属性 VatRateViewModel 您可以简单：

@Html.EditorFor(x => x.SomePropertyOfTypeVatRateViewModel)

这将使得相应的编辑器模板。

which would render the corresponding editor template.

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