Question

在MVC4中，名为UserController的控制器包含一个动作ForgotPassword，并且还创建了相应的视图。该视图包含一个文本框和一个提交按钮。在提交此按钮时，应验证电子邮件ID，如果未在记录中找到，则应在同一视图上显示错误消息，否则导航到不同视图。我使用Begin Form将提交按钮映射到UserController中的新动作VerifyEmailId。但是我仍然坚持根据电子邮件ID的有效性传递视图。请注意，此操作VerifyEmailId没有任何相关视图。

请建议最好的方法。

查看代码：

@model UIKendoLearning.Models.UserDetails
<h2>Forgot Retrieval</h2>
@using (Html.BeginForm("ForgotPassword", "User"))
{
 <div id="PasswordRetrieval">
 @Html.Label("Please enter your registered email address: ")
 <input type="email" id="Email" value="@Model.Email" name="Email" placeholder="e.g.      myname@example.net" />
 @Html.ValidationMessageFor(m => m.Email)
 <br />
 <input type="submit" name="Submit" value="Generate New Password" />
 </div>
}

控制器代码：

public class UserController : Controller
{
    //
    // GET: /User/

    public ActionResult ForgotPassword()
    {
        return View(new UserDetails());
    }

    [HttpPost]
    public ActionResult SendNewPassword(UserDetails userInfo)
    {
        try
        {
            if (userInfo != null)
            {
                HttpClient server = new HttpClient();
                server.DefaultRequestHeaders.Add("EmailId", userInfo.Email);
                HttpResponseMessage response = server.GetAsync("http://localhost/BankService/api/Account/ValidateUser").Result;
                if (response.StatusCode != HttpStatusCode.Found)
                {                        
                    return RedirectToAction("ForgotPassword", "User");
                }
            }
        }
        catch (Exception ee)
        {

        }
        return RedirectToAction("Index", "Home");
    }

Answer 1

我有类似的实现，我建议您不需要新的Action ValidateEmailID，但只需要一个可以从ForgotPassword Post Action调用的bool函数。

这可能是控制器代码：

//
// GET: /User/ForgotPassword

[AllowAnonymous]
public ActionResult ForgotPassword()
{
  return View();
}

//
// POST: /User/ForgotPassword

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public ActionResult ForgotPassword(String email)
{
  if (ModelState.IsValid)
  {
    if (verifyEmailId(email))
    {
      // Do something, i.e. send email with proper instruction
      // Display a view to say action is done!
      return View("ConfirmReset");
      // Or redirect to another action:
      return RedirectToAction("ActionName", "ControllerName");
    }
    else
    {
      // Add an error message
      ModelState.AddModelError("", "The email ID you submitted is unknown");
    }
  }
  // Redisplay the ForgotPassword View with error message, preserving the submitted email value
  ViewBag.email = email;
  return View();
}

private bool verifyEmailId(email) {
   // Your own code
   // return true if email is valid
}

这可能是ForgotPassword View代码：

<p>Please submit the email address to reset the password</p>

@using (Html.BeginForm()) {

  @Html.AntiForgeryToken()
  @Html.ValidationSummary()

  @Html.Label("email")
  @Html.Editor("email")

  <input type="submit" value="Reset Password" />
}

我希望这对你有用。

Answer 2

正如@Doan Cuong所写，这是使用内容有效性的好方法。例如，您的视图模型如下：


    class UserDetails
    {
        [DataType(DataType.EmailAddress)]
        [Required(ErrorMessage = "Please enter a proper email address")]
        public string Email { get; set; }

        // property for displaying custom error message if validation failed
        public string ErrorMessage { get; set; }

        ...
    }

你有一个调用动作ForgetPassword的表单。 SendNewPassword应重命名为ForgetPassword。如果你使用try / catch，如果你发现错误就会很好。因此，控制器代码可能如下所示：


    class UserController
    {
        [NonAction]
        private bool VerifyEmail(string email)
        {
            // ... verify logic
        }

        public ActionResult ForgotPassword()
        {
            return View(new UserDetails());
        }

        [HttpPost]
        public ActionResult ForgotPassword(UserDetails userInfo)
        {
            if (ModelState.IsValid)
            {
                // Here is userInfo.Email is a proper email address
                if(VerifyEmail(userInfo.Email)
                {
                    HttpClient server = new HttpClient();
                    server.DefaultRequestHeaders.Add("EmailId", userInfo.Email);
                    HttpResponseMessage response = server.GetAsync("http://localhost/BankService/api/Account/ValidateUser").Result;
                    if (response.StatusCode != HttpStatusCode.Found)
                    {
                        // Here is error action ForgotPassword with param with field "error"                        
                        // return RedirectToAction("ForgotPassword", "User",new{error="notFound"});
                        return View("ForgotPassword", "User", new UserDetails { ErrorMessage = "Email not found" } );
                    }
                    // Here is all ok - go home
                    return RedirectToAction("Index", "Home");
                }
            }
            // Redisplay form with error messages
            return View(model);
        }
    }

修改查看代码：

@model UIKendoLearning.Models.UserDetails

<script src="~/Scripts/jquery.validate.min.js"></script>
<script src="~/Scripts/jquery.validate.unobtrusive.min.js"></script>

<h2>Forgot Retrieval</h2>
@using (Html.BeginForm("ForgotPassword", "User"))
{
    <div id="PasswordRetrieval">
    @Html.Label("Please enter your registered email address: ")
    <input type="email" id="Email" value="@Model.Email" name="Email" placeholder="..." />
    @Html.ValidationMessageFor(m => m.Email)
    @if(Model.ErrorMessage != null)
    {
        @* you can insert some good html *@
        <span>@Model.ErrorMessage</span>
    }
    <br/>
    <input type="submit" name="Submit" value="Generate New Password" />
    </div>
}

Answer 3

修改方法

@model UIKendoLearning.Models.UserDetails
<h2>Forgot Retrieval</h2>
@using (Html.BeginForm("ForgotPassword", "User"))
{
 <div id="PasswordRetrieval">
 @ViewBag.Error **// Your Error comes here**
 @Html.Label("Please enter your registered email address: ")
 <input type="email" id="Email" value="@Model.Email" name="Email" placeholder="e.g.      myname@example.net" />
 @Html.ValidationMessageFor(m => m.Email)
 <br />
 <input type="submit" name="Submit" value="Generate New Password" />
 </div>
}

控制器

    public ActionResult ForgotPassword()
    {
        if (Request.QueryString["error"] != null) 
           ViewBag.Error = "Email Not Found";
        else
           ViewBag.Error = "";
        return View(new UserDetails());
    }
    [HttpPost]
    public ActionResult SendNewPassword(UserDetails userInfo)
    {
        try
        {
            if (userInfo != null)
            {
                HttpClient server = new HttpClient();
                server.DefaultRequestHeaders.Add("EmailId", userInfo.Email);
                HttpResponseMessage response = server.GetAsync("http://localhost/BankService/api/Account/ValidateUser").Result;
                if (response.StatusCode != HttpStatusCode.Found)
                {                        
                    return RedirectToAction("ForgotPassword", "User",new{error="notFound"});
                }
            }
        }
        catch (Exception ee)
        {

        }
        return RedirectToAction("Index", "Home");
    }

提交按钮映射到没有相关视图的Controller操作。根据情况回归不同的观点

3 个答案: