传递模型以查看和丢失 HttpPost 上的属性值

Question

我是 MVC 的新手，我猜这个问题反映了这一点。

我有 2 个 ActionResults - 注册 - 一个在 HttpGet，另一个在 HttpPost。在HttpGet 上，我创建了一个模型实例，根据查询字符串值设置公司属性并将模型传递给视图。到目前为止，一切顺利。

当HttpPost 发生时，公司属性设置为空。好像什么都没有设置。我究竟做错了什么？

注册 HTTPGet

[AllowAnonymous]
public ActionResult Register(Guid Firm)
{
    InnuendoContext DB = new InnuendoContext();

     RegisterModel RM = new RegisterModel();
     RM.Firm = (from F in DB.Firms
         where F.FirmId == Firm
         select F).FirstOrDefault();

    return View(RM);
}

注册 HTTPPost

[HttpPost]
[AllowAnonymous]
[ValidateAntiForgeryToken]
public ActionResult Register( RegisterModel model)
{
    if (ModelState.IsValid)
    {
        // Attempt to register the user
        try
        {
            WebSecurity.CreateUserAndAccount(model.UserName, model.Password, propertyValues: new 
            { 
                Name = model.Name,
                Surname = model.Surname,
                Firm_FirmID = model.Firm 
            });
            WebSecurity.Login(model.UserName, model.Password);
            return RedirectToAction("Index", "Home");
        }
        catch (MembershipCreateUserException e)
        { 
            ModelState.AddModelError("", ErrorCodeToString(e.StatusCode));
        }
    }
}

查看

@model Innuendo.Models.RegisterModel
@{
    ViewBag.Title = "Register";
}

<hgroup class="title">
    <h1>@ViewBag.Title.</h1>
    <h2>Create a new account.</h2>
</hgroup>

@using (Html.BeginForm()) {
    @Html.AntiForgeryToken()
    @Html.ValidationSummary()

<fieldset>
    <legend>Registration Form</legend>
    <ol>
        <li>
            @Html.LabelFor(m => m.UserName)
            @Html.TextBoxFor(m => m.UserName)
        </li>
        <li>
            @Html.LabelFor(m => m.Name)
            @Html.TextBoxFor(m => m.Name)
        </li>
        <li>
            @Html.LabelFor(m => m.Surname)
            @Html.TextBoxFor(m => m.Surname)
        </li>

        <li>
            @Html.LabelFor(m => m.Password)
            @Html.PasswordFor(m => m.Password)
        </li>
        <li>
            @Html.LabelFor(m => m.ConfirmPassword)
            @Html.PasswordFor(m => m.ConfirmPassword)
        </li>
    </ol>
    <input type="submit" value="Register" />
</fieldset>
}

@section Scripts {
    @Scripts.Render("~/bundles/jqueryval")
}

型号

namespace Innuendo.Models
{
    [Table("Firms")]
    public class FirmModel
    {
        [Key]
        [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
        public Guid FirmId { get; set; }

        [Display(Name = "Firm Name")]
        [Required]
        [StringLength(250)]
        public string Name { get; set; }

        [Required]
        public virtual AddressModel Address { get; set; }

        [StringLength(250)]
        public string LogoPath { get; set; }
    }
}

Answer 1

在RegisterModel 中添加一个属性来保存固定ID，并将此ID 传递到您的视图并通过隐藏输入回发ID。

public RegisterModel
{
    // other codes
    public Guid FirmID {get;set;}
}

在你得到行动：

public ActionResult Register(Guid Firm)
{
    // other codes
    // also don't fetch firm object if you don't want to show firm data to user
    RM.FirmID=Firm;
    View(RM);
}

在您的视图中，在表单元素中添加一个隐藏字段：

@Html.HiddenFor(model=>model.FirmID);

在回发操作中，您可以使用 id 来获取您的对象

[HttpPost]
public ActionResult Register(RegisterModel model)
{
    // other codes

    // your firm id is here you could do whatever you want
    var firmID=model.FirmID;

}

Answer 2

在注册视图中没有设置您的公司属性的输入字段，因此它返回为空