MVC3远程属性 - 验证 [英] MVC3 Remote Attribute - validation

问题描述

我有一个类管理：

    public class Admin
    {
        public virtual int AdminId { get; set; }

        [Remote("UsernameAvailable", "Admins")]
        [Display(Name = "lblUsername", ResourceType = typeof(Resources.Admin.Controllers.Admins))]
        public virtual string Username { get; set; }
...

然后我有一个是用于视图视图模型类：

then i have a viewmodel class that's used for a view:

   public class AdminsEditViewModel 
    {

        public Admin Admin { get; set; }

        public IEnumerable<SelectListItem> SelectAdminsInGroup { get; set; }
...

控制器：

public ActionResult UsernameAvailable(string Username)
{
    return Json(this.AdminRepository.GetLoginByUsername(Username), JsonRequestBehavior.AllowGet);

}

不过用户名字符串总是空，因为什么被发送到动作是这样的：

However string Username is always null because what is sent to Action is this:

http://localhost/admin/admins/usernameavailable?Admin.Username=ferwf

问题是，UsernameAvailable发送Admin.Username值和HTTP查询不名价值。我会怎么做使用视图模型呢？

The problem is that UsernameAvailable sends Admin.Username value and NOT Username value in the http query. how would I do it using a view model?

感谢

推荐答案

您可以指定一个preFIX到默认的模型绑定：

You could specify a prefix to the default model binder:

public ActionResult UsernameAvailable([Bind(Prefix = "Admin")]string username)
{
    return Json(
        this.AdminRepository.GetLoginByUsername(username), 
        JsonRequestBehavior.AllowGet
    );
}

或使用管理​​模型：

public ActionResult UsernameAvailable(Admin admin)
{
    return Json(
        this.AdminRepository.GetLoginByUsername(admin.Username), 
        JsonRequestBehavior.AllowGet
    );
}

现在用户名参数将被正确绑定假设有如下要求：

Now username parameter will be correctly bound assuming the following request:

http://localhost/admin/admins/usernameavailable?Admin.Username=ferwf

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