在 MVC3 中使用远程验证时的空值

发布于 2024-12-10 22:56:42 字数 836 浏览 1 评论 0原文

我在远程验证方面遇到问题。

我有一个视图模型，其属性上添加了远程验证器，但是当我运行表单并在文本框中输入字符串时，传递给控制器的值为空。

视图模型中的属性如下所示：

[Required(ErrorMessage = "Enter the host's name")]
[Remote("ValidateHostFullName", "BoardroomBooking", ErrorMessage = "Enter a different name")]
[DisplayName("Host's Name")]
public string HostFullName { get; set; }

控制器中验证器的代码如下所示：

public ActionResult ValidateHostFullName([Bind(Prefix="BookingReceptionViewModel")]string HostFullName)
{
    if (!HostFullName.Equals("John Smith"))
    {
        return Json(true, JsonRequestBehavior.AllowGet);
    }

    return Json("{0} is not allowed", JsonRequestBehavior.AllowGet);
}

无论在框中键入什么内容，HostFullName 的字符串值都显示为 null。我已经尝试过使用和不使用绑定前缀，这没有什么区别。

我已经在模型上尝试过这个方法并且它有效，但似乎只有当我使用视图模型时才会出现问题。

谢谢马克

原文

I am having a problem with remote validation.

I have a viewmodel with a property on which I have added a Remote validator but when I run the form and enter a string in the text box the value passed to the controller is null.

The property in the viewmodel looks like this:

[Required(ErrorMessage = "Enter the host's name")]
[Remote("ValidateHostFullName", "BoardroomBooking", ErrorMessage = "Enter a different name")]
[DisplayName("Host's Name")]
public string HostFullName { get; set; }

The code for the validator in the Controller looks like this:

public ActionResult ValidateHostFullName([Bind(Prefix="BookingReceptionViewModel")]string HostFullName)
{
    if (!HostFullName.Equals("John Smith"))
    {
        return Json(true, JsonRequestBehavior.AllowGet);
    }

    return Json("{0} is not allowed", JsonRequestBehavior.AllowGet);
}

The value of the string for HostFullName shows as null no matter what is typed in the box. I have tried it with and without the Bind Prefix and that makes no difference.

I've tried this on a model and it works, it only seems to have an issue when I use a viewmodel.

Thanks

Mark

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