ASP.Net MVC3亲子模型绑定 [英] ASP.Net MVC3 Parent Child Model Binding

问题描述

我有一个使用用户对象模型的局部模板。用户拥有帐户的集合。在这个局部模板我有一个循环如下。该_account局部模板被绑定到Account类

I have a partial template that uses a User object as a model. The user has a collection of Accounts. On this partial template I have a loop as follows. The _Account partial template is bound to the Account class

  @foreach (var item in Model.Accounts)
            { 
                <tr>
                    <td colspan="6">
                        <div>
                            @Html.Partial("_Account", item)
                        </div>
                    </td>
                </tr>

            }

在我的控制器方法我最初尝试

In my controller method I initially tried

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult UserDetails(User user, string actionType)

但User.Accounts集合为空。然后我尝试这一点。尽管如此帐户集合为空。

But the User.Accounts collection is empty. Then I tried this. Still the Accounts collection is empty.

[AcceptVerbs(HttpVerbs.Post)]
public ActionResult UserDetails(User user,  
                             [Bind(Prefix="User.Accounts")]
                             FixupCollection<Account> Accounts, 
                             string actionType)

我可以使用默认的模型绑定器实现这个功能或做我需要做什么不同？

Can I use the default Modelbinder implementation to achieve this or do I need to do anything different?

推荐答案

是的，你可以使用默认的模型粘合剂。你只需要正确命名的字段。所以，你需要你的循环输出是这样的：

Yep, you can use the default model binder. You just need to name your fields correctly. So you need your loop to output something like this:

...
<input type="text" name="user.Accounts[0].SomeTextField" />
<input type="text" name="user.Accounts[0].SomeOtherTextField" />
...
<input type="text" name="user.Accounts[1].SomeTextField" />
<input type="text" name="user.Accounts[1].SomeOtherTextField" />
...

如果您需要添加/删除帐户，硬codeD索引变得有点棘手。你可以重新分配使用javascript回发前的名称。但是，这一切成为可能。这个问题给出了模型绑定更多详细信息：

If you need to add/remove accounts, the hardcoded indexes get a little trickier. You could re-assign the names using javascript before postback. But it's all possible. This question gives more detail on model binding:

<一个href=\"http://stackoverflow.com/questions/554790/asp-net-mvc-binding-a-complex-type-to-a-select\">ASP.NET MVC：绑定复杂类型到选择

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