Question

以下是我的控制器的代码：

    [AcceptVerbs(HttpVerbs.Post)]
    public ActionResult Edit(int id, Actor actor)
    {

        try
        {
            actorRepository.Save(actor);
            return RedirectToAction("Index");
        }
        catch
        {
            return View("Edit");
        }
    }

调用具有强类型为Actor类的局部视图的视图。出于某种原因，有一些字段没有绑定到类。有问题的字段是Address，Address2和ZipCode。它们填充在页面上，但它们返回null。其他所有领域都在那里，而不是这些。

有什么想法吗？另外，我怎么能写单元测试来复制这种行为？

更新公共类演员 { public string MiddleName {get;设置;}

    [Required(ErrorMessage = "First Name is Required")]
    [RegularExpression(@"\w*", ErrorMessage = "Last Name Contains Illegal Characters")]
    public string FirstName { get; set; }

    [Required(ErrorMessage = "Last Name is Required")]
    [RegularExpression(@"\w*", ErrorMessage = "Last Name Contains Illegal Characters")]
    public string LastName { get; set; }

    [DataType(DataType.PhoneNumber, ErrorMessage = "Please Enter a Valid Phone Number")]
    [Required(ErrorMessage = "Phone Number is Required")]
    public string PhoneNumber { get; set; }

    [Required(ErrorMessage = "Address is Required")]
    [RegularExpression(@"\w*", ErrorMessage = "Address Contains Illegal Characters")]
    public string Address { get; set; }

    [RegularExpression(@"\w*", ErrorMessage = "Address2 Contains Illegal Characters")]
    public string Address2 { get; set; }

    [RegularExpression(@"\w*",ErrorMessage = "State Contains Illegal Characters")]
    [Required(ErrorMessage = "State is Required")]
    public string State { get; set; }

    [Required(ErrorMessage = "Zip Code is Required")]
    [RegularExpression("\b[0-9]{5}(?:-[0-9]{4})?\b",ErrorMessage = "Please Enter a Valid Zip Code")]
    public string ZipCode { get; set; }

    [Required(ErrorMessage = "Even in theater, you have to choose a gender")]
    public bool? Gender { get; set; }

    [Required(ErrorMessage = "Cell Phone Number is Required")]
    public string CellPhone { get; set; }

    public int ActorId { get; set; }

    [DataType(DataType.MultilineText, ErrorMessage = "Illegal Characters in Notes")]
    public string Notes { get; set; }

    [Required(ErrorMessage = "Email Address is Required")]
    [DataType(DataType.EmailAddress)]
    public string EMail { get; set; }

    [Required(ErrorMessage = "City Is Required")]
    public string City {get; set;}
}

<fieldset>
<legend>Fields</legend>
<p>
    <label for="MiddleName">MiddleName:</label>
    <%= Html.EditorFor(m=>m.MiddleName) %>
    <%= Html.ValidationMessage("MiddleName", "*") %>
</p>
<p>
    <label for="FirstName">FirstName:</label>
    <%=Html.EditorFor(m=>m.FirstName) %>
    <%= Html.ValidationMessage("FirstName", "*") %>
</p>
<p>
    <label for="LastName">LastName:</label>
    <%= Html.TextBox("LastName", Model.LastName) %>
    <%= Html.ValidationMessage("LastName", "*") %>
</p>
<p>
    <label for="PhoneNumber">PhoneNumber:</label>
    <%= Html.TextBox("PhoneNumber", Model.PhoneNumber) %>
    <%= Html.ValidationMessage("PhoneNumber", "*") %>
</p>
<p>
    <label for="Address">Address:</label>
       <%=Html.EditorFor(m=>m.Address) %>
       <%= Html.ValidationMessage("Address", "*") %>
</p>
<p>
    <label for="Address2">Address2:</label>
       <%=Html.EditorFor(m=>m.Address2) %>
    <%= Html.ValidationMessage("Address2", "*") %>
</p>
<p>
    <label for="State">State:</label>
    <%= Html.TextBox("State", Model.State) %>
    <%= Html.ValidationMessage("State", "*") %>
</p>
<p>
    <label for="ZipCode">ZipCode:</label>
    <%= Html.TextBox("ZipCode", Model.ZipCode) %>
    <%= Html.ValidationMessage("ZipCode", "*") %>
</p>
<p>
    <label for="Gender">Gender:</label>
    <%= Html.TextBox("Gender", Model.Gender) %>
    <%= Html.ValidationMessage("Gender", "*") %>
</p>
<p>
    <label for="CellPhone">CellPhone:</label>
    <%= Html.TextBox("CellPhone", Model.CellPhone) %>
    <%= Html.ValidationMessage("CellPhone", "*") %>
</p>
<p>
    <label for="ActorId">ActorId:</label>
    <%= Html.TextBox("ActorId", Model.ActorId) %>
    <%= Html.ValidationMessage("ActorId", "*") %>
</p>
<p>
    <label for="Notes">Notes:</label>
    <%= Html.TextBox("Notes", Model.Notes) %>
    <%= Html.ValidationMessage("Notes", "*") %>
</p>
<p>
    <label for="EMail">EMail:</label>
    <%= Html.TextBox("EMail", Model.EMail) %>
    <%= Html.ValidationMessage("EMail", "*") %>
</p>
<p>
    <label for="City">City:</label>
    <%= Html.TextBox("City", Model.City) %>
    <%= Html.ValidationMessage("City", "*") %>
</p>
<p>
    <input type="submit" value="Save" />
</p>
</fieldset>

Answer 1

有一个名为ConvertEmptyStringsToNull的ModelMetaData属性（默认值= true），它在ASP.MVC的DefaultModelBinder类中将空字符串转换为NULL。

您可以通过每个属性上的DataAnnotation更改此内容，如下所示：

[DisplayFormat(ConvertEmptyStringToNull=false)]

或者您可以创建自己的ModelBinder并从DefaultModelBinder继承并只是覆盖GetPropertyValue方法以忽略此设置：

ModelBinders.Binders.DefaultBinder = new Delphi.Mvc.KeepStringsBinder（）; ModelBinders.Binders.Add（typeof（ObjectBase），new Delphi.Mvc.KeepStringsBinder（））;

Answer 2

以下是测试模型粘合剂的方法：

How to test custom Model Binders in ASP.NET MVC?

只有你会测试DefaultModelBinder。

对于字段，您尚未显示Actor源代码。但是，既然你谈到字段，我猜你真的使用字段 - 但是ASP.NET MVC模型绑定器不会绑定到字段 - 只能绑定到属性。所以，如果你有

public class Actor
{
   public string ZipCode;
}

您需要更改为

public class Actor
{
   public string ZipCode { get; set; }
}

另一个原因可能是你有

public class Actor
{
   public Address Address { get; set; }
}

并使用partial来显示地址;所以它被命名为“ZipCode”，但必须命名为“Address.ZipCode”。或者也许你的地址没有无参数构造函数......换句话说，如果没有看到源代码那就太难以猜测了。

使用更新信息，这是无意义的。坏字段看起来和好字段一样。但是尝试使用Html.TextBox而不是EditorFor。尝试使用FireBug（或IE Dev）查看POST数据，检查字段名称和值是否正确。如果他们这样做 - 问题在于模型绑定器，如果他们是坏/不在 - 页面有问题。另外，尝试检查控制器操作中的ModelState.IsValid以及ModelState错误。

一些领域没有在ModelBinder中出现

2 个答案: