Question

我在MVC中使用AddModelError来显示错误消息，但我的问题是当我在输入值之前转到页面时我也看到了错误消息。我希望在推送提交后以及电子邮件为空时看到该消息。这是我的控制器方法：

    [Route("forgotPassword")]
    public async Task<ActionResult> ForgotPassword(ForgotPasswordRequest forgotPasswordRequest)
    {
        string message = string.Empty;
        try
        {
            if (ModelState.IsValid)
            {
                   .....
                    else
                    {
                        ModelState.AddModelError("", Constants.MessageStrings.NoUser);
                    }
                }
            }
            else
            {
                ModelState.AddModelError("", Constants.MessageStrings.RequiredFields);
            }
        }
        catch (Exception exception)
        {
          ...
        return PartialView(message);
    }

这是我的观点：

<div>
<p>Please enter the Email Address associated with your account and we will email you a link to reset your password.</p>
@using (Html.BeginForm("forgotPassword", "Home", FormMethod.Post))
{
    @Html.AntiForgeryToken()
    <label>
        Email Address
        <input type="email" name="email" placeholder="jdoe@example.com">
    </label>
        <input type="submit" value="Submit">
          @Html.ValidationSummary(true)
}

Answer 1

您需要将控制器操作分解为不同的方法。第一个只会返回一个新的ForgotPasswordRequest，而第二个会检查ModelState并执行实际的密码请求工作。

首先（GET）

[Route("forgotPassword")]
public async Task<ActionResult> ForgotPassword()
{
   // no validation, just returns a new ForgotPasswordRequest for the the view
}

秒（POST）

[Route("forgotPassword")]
[HttpPost]
public async Task<ActionResult> ForgotPassword(ForgotPasswordRequest forgotPasswordRequest)
{
    // checks the ModelState and performs the any other actions
}

在MVC

1 个答案: