单个属性没有得到约束上HttpPost [英] Single property not getting bound on HttpPost
问题描述
我工作的第一个项目MVC3在我们公司，我已经打了一个块。看起来没人能够弄清楚发生了什么事情。
I'm working on the first MVC3 project at our company, and I've hit a block. No one can seem to figure out what's going on.
我有我在页面上使用一个复杂的模型：
I have a complex Model that I'm using on the page:
public class SpaceModels : List<SpaceModel> {
public bool HideValidation { get; set; }
[Required(ErrorMessage=Utilities.EffectiveDate + Utilities.NotBlank)]
public DateTime EffectiveDate { get; set; }
public bool DisplayEffectiveDate { get; set; }
}
在控制器中，我创建一个SpaceModels空白SpaceModels对象时，空间得到了相结合（这将是目标空间）。
In the Controller, I create a SpaceModels object with blank SpaceModels for when Spaces get combined (this would be the destination Space).
// Need a list of the models for the View.
SpaceModels models = new SpaceModels();
models.EffectiveDate = DateTime.Now.Date;
models.DisplayEffectiveDate = true;
models.Add(new SpaceModel { StoreID = storeID, SiteID = siteID, IsActive = true });
return View("CombineSpaces", models);
然后在视图中，我使用的SpaceModels对象作为模型，并在窗体正在为生效日期一个TextBox：
Then in the View, I am using that SpaceModels object as the Model, and in the form making a TextBox for the Effective Date:
@model FiveBelow.CoTenancy.Data.SpaceModels
@using (Html.BeginForm("CombineSpaces", "Space")) {
<div class="EditLine">
<span class="EditLabel LongText">
New Space Open Date
</span>
@Html.TextBoxFor(m => m.EffectiveDate, new {
size = "20",
@class = "datecontrol",
// Make this as a nullable DateTime for Display purposes so we don't start the Calendar at 1/1/0000.
@Value = Utilities.ToStringOrDefault(Model.EffectiveDate == DateTime.MinValue ? null : (DateTime?)Model.EffectiveDate, "MM/dd/yyyy", string.Empty)
})
@Html.ValidationMessageFor(m => m.EffectiveDate)
</div>
<hr />
Html.RenderPartial("_SpaceEntry", Model);
}
局部视图，通过所有SpaceModels得到渲染迭代，并创建包含对个人SpaceModel对象编辑字段。 （我使用的列表中使用时，空间得到细分，以及对同一视图。）
The Partial View that gets rendered iterates through all SpaceModels, and creates a containing the Edit fields for the individual SpaceModel objects. (I'm using the List to use the same Views for when the Spaces get Subdivided as well.)
然后在HttpPost，EFFECTIVEDATE的仍是回到它的默认DateTime.MinValue：
Then on the HttpPost, the EffectiveDate is still back at it's DateTime.MinValue default:
[HttpPost]
public ActionResult CombineSpaces(SpaceModels model, long siteID, long storeID, DateTime? effectiveDate) {
// processing code
}
我添加了日期时间？ EFFECTIVEDATE参数来证明，当它被改变的价值其实回来呢。我甚至尝试移动文本框到_SpaceEntry局部视图的渲染，但是毫无效果有两种。
I added that DateTime? effectiveDate parameter to prove that the value when it gets changed does in fact come back. I even tried moving the rendering of the TextBox into the _SpaceEntry Partial View, but nothing worked there either.
我也尝试使用 @ Html.EditorFor（M = GT; m.EffectiveDate）代替了 @ Html.TextBoxFor（ ），但仍然返回DateTime.MinValue。 （我的老板不喜欢放弃使用 @ Html.EditorForModel 的方式呈现的控制。）
I did also try using the @Html.EditorFor(m => m.EffectiveDate) in place of the @Html.TextBoxFor(), but that still returned DateTime.MinValue. (My boss doesn't like giving up the control of rendering using the @Html.EditorForModel by the way.)
必须有一些简单的我失踪。请让我知道你需要什么。
There has to be something simple that I'm missing. Please let me know if you need anything else.
推荐答案
纵观<一个href=\"http://aspnetwebstack.$c$cplex.com/SourceControl/changeset/view/e7526daecf9d#src/System.Web.Mvc/DefaultModelBinder.cs\"相对=nofollow>来源$ C $ C为 DefaultModelBinder ，具体 BindComplexModel（），如果它检测一个集合键入它会结合各个元件，但将不会试图绑定列表对象本身的性质。
Looking at the source code for DefaultModelBinder, specifically BindComplexModel(), if it detects a collection type it will bind the individual elements but will not attempt to bind properties of the list object itself.
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