远程验证似乎有问题

Question

想象这种情况:

建立

在默认的MVC3项目中,在中创建一个新的复杂类型 AccountModels.cs

public class GlobalAccount
{
    public GlobalAccount()
    {
        this.LogOn = new LogOnModel();
        this.Register = new RegisterModel();
    }

    public LogOnModel LogOn { get; set; }
    public RegisterModel Register { get; set; }
}

在RegisterModel更改UserName为:

[Required]
[Remote("UserNameExists", "Validation", "", ErrorMessage = "Username is already taken.")]
[RegularExpression(@"(\S)+", ErrorMessage = "White space is not allowed.")]
[Display(Name = "Username (spaces will be stripped, must be at least 6 characters long)")]
public string UserName { get; set; }

控制器中的UserNameExists方法Validation如下:

public class ValidationController : Controller
{
    public JsonResult UserNameExists(string UserName)
    {
        string user = null;
        if (!String.IsNullOrWhiteSpace(UserName) && UserName.Length >= 6)
            user = UserName == "abcdef" ? "ok" : null;

        return user == null ?
            Json(true, JsonRequestBehavior.AllowGet) :
            Json(string.Format("{0} is not available.", UserName), JsonRequestBehavior.AllowGet);
    }
}

现在在Register View中,使用GlobalAccountModel而不是RegisterModel

用户名输入框将如下:

@model Your.NameSpace.Models.GlobalAccount

和

 <div class="field fade-label">
    @Html.LabelFor(model => model.Register.UserName, new { @class = "text" })
    @Html.TextBoxFor(model => model.Register.UserName, new { spellcheck = "false", size = "30" })
</div>

这将在HTML中产生类似的结果

<div class="field fade-label">
    <label class="text" for="Register_UserName"><span>Username (spaces will be stripped, must be at least 6 characters long)</span></label>
    <input data-val="true" data-val-regex="White space is not allowed." data-val-regex-pattern="(\S)+" data-val-remote="Username is already taken." data-val-remote-additionalfields="*.UserName" data-val-remote-url="/beta/Validation/UserNameExists" data-val-required="The Username (spaces will be stripped, must be at least 6 characters long) field is required." id="Register_UserName" name="Register.UserName" size="30" spellcheck="false" type="text" value="">
</div>

调试

如果您使用FireBug来检查发生了什么...... 远程验证是将属性名称而不是属性ID发送到验证方法(UserNameExists一个),如下所示:

Register.UserName 代替 Register_UserName

所以我无法取得这个价值...... 永远 :(

这真的是一个错误,或者是某人已经找到的东西,我无法通过谷歌搜索得到它？

这是一个实际问题的简单图像:

Answer 1

怎么样:

public ActionResult UserNameExists(
    [Bind(Include = "UserName")]RegisterModel register
)
{
    string user = null;
    if (!String.IsNullOrWhiteSpace(register.UserName) && register.UserName.Length >= 6)
        user = register.UserName == "abcdef" ? "ok" : null;

    return user == null ?
        Json(true, JsonRequestBehavior.AllowGet) :
        Json(string.Format("{0} is not available.", register.UserName), JsonRequestBehavior.AllowGet);
}

另一种可能性是定义一个特殊的视图模型:

public class UserNameExistsViewModel
{
    public string UserName { get; set; }
}

然后:

public ActionResult UserNameExists(UserNameExistsViewModel register)
{
    string user = null;
    if (!String.IsNullOrWhiteSpace(register.UserName) && register.UserName.Length >= 6)
        user = register.UserName == "abcdef" ? "ok" : null;

    return user == null ?
        Json(true, JsonRequestBehavior.AllowGet) :
        Json(string.Format("{0} is not available.", register.UserName), JsonRequestBehavior.AllowGet);
}

令人讨厌的是以下不起作用:

public ActionResult UserNameExists(
    [Bind(Prefix = "Register")]string UserName
)

去图:-)我可能会使用自定义视图模型.它看起来最干净.