ASP.NET MVC模型/视图模型验证 [英] ASP.NET MVC Model/ViewModel Validation

问题描述

我在LINQ到SQL中使用标有数据标注属性以及XVAL参考部分类模型类。

I have model classes in Linq-to-Sql with partial classes marked with data annotation attributes and a reference to xVal.

当我直接绑定，以便模型一切都很正常，都是由XVAL和服务器端仔细检查所产生的JS。

When I bind a view directly to a model everything works great, both the JS generated by xVal and server side double check.

我的很多观点不采取输入到一个特定的模式，所以我设置视图模型类。相反，暴露整个模型实例我公开属性到模型中，我允许/需要的视图设置。

Many of my views don't take input to one specific model, so I am setting up view model classes. Instead of exposing an entire model instance I expose properties into the model that I allow/need to be set by the view.

// foo model 
public class Foo {
    public string FooField { ... }
    public Bar Bar { ... }
}

// bar model, where bar is a parent relationship of foo in the db
public class Bar {
    public string BarField { ... }
}

// view model stuff
public class FooViewModel {
    private Foo foo;

    public FooViewModel() {
        foo = new Foo() { Bar = new Bar() };
    }

    public Foo Model {
        get { return foo; }
        set { foo = value; }
    }

    public string BarField { 
        get { return foo.Bar.BarField; }
        set { foo.Bar.BarField = value; }
    }

    public string ExtraViewModelField {
        get; set; 
    }
}

此方法正确填充视图模型类和仓库可以正确填充记录。

This approach populates the view model class correctly and the repository can populate the record correctly.

这根本不​​虽然通过审定拉。我已经看了看发出的客户端code和验证阵列为空XVAL。此外，在服务器端检查IsValid的始终是真实的。

It doesn't pull through the validation at all though. I have looked at the client code emitted and the validation array is empty for xval. Additionally, the server side check for IsValid is always true.

我可以拥有的数据注解虽然拉视图模型的属性，这样的验证，或者我应该做这个法子？

Can I have the data annotations pull though the properties of view model for validation like this, or should I be doing this another way?

推荐答案

如果您使用的谐音，并传入亚型，你仍然需要参赛资格。见如下：

If you use partials, and pass in the subtype, you still need to qualify. See as follows:

<%@ Control Language="C#" 
                   Inherits="System.Web.Mvc.ViewUserControl<MvcWeb.Models.OrderDetail>" %>

<% using (Html.BeginForm()) { %>

    <fieldset>
        <legend>Fields</legend>
            <%= Html.Hidden("OrderId", Model.OrderId) %>
            <%= Html.Hidden("ProductId", Model.ProductId)%>
        <p>
            <label for="Quantity">Quantity:</label>
            <%= Html.TextBox("OrderDetails.Quantity", Model.Quantity)%>
            <%= Html.ValidationMessage("OrderDetails.Quantity", "*") %>
        </p>
        <p>
            <input type="submit" value="Save" />
        </p>
    </fieldset>

<% } %>

注意该类型订单明细，但我仍然prefixing的处理验证消息。

Notice that the type is OrderDetails, but I'm still prefixing that to deal with validation messages.

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