我正在尝试将视图绑定到包含列表中列表的模型。当然,我更喜欢使用开箱即用的模型绑定。昨天花了一些时间在上面我发现了一个非常黑客的解决方法,我想纠正这个问题。我的模型的基本结构如下:
public class MyMPIModel
{
public List<ScoreInfo> ScoreInfo { get; set; }
}
public class ScoreInfo
{
public int ScorePrefId { get; set; }
public List<Category> Categories { get; set; }
}
public class Category
{
public int Id;
public string Name;
public bool Checked;
}
视图InterestCategories.cshtml包含以下格式:
@using (Html.BeginForm())
{
for (var i = 0; i < Model.ScoreInfo.Count; i++)
{
@Html.EditorFor(x => x.ScoreInfo[i])
}
}
编辑器模板ScoreInfo.cshtml:
@Html.HiddenFor(x => x.ScorePrefId)
<div class="preferences-block">
@for (var i = 0; i < Model.Categories.Count; i++)
{
@Html.EditorFor(x => x.Categories[i])
}
</div>
最后是编辑器模板Category.cshtml:
@Html.HiddenFor(x => x.Id)
@Html.HiddenFor(x => x.Name)
<label>
@Html.CheckBoxFor(x => x.Checked, new { @class = "check"})
<span>@Model.Name</span>
</label>
使用firebug检查表单我可以看到所有隐藏的字段都已填充。此外,当我提交表格时,Fiddler会显示正确的数据。这是一个示例:
ScoreInfo[0].Categories[1].Id 2
ScoreInfo[0].Categories[1].Name Managing Money
ScoreInfo[0].Categories[1].Checked false
但是,当我发布到控制器,设置断点并检查模型时,已填充ScoreInfo对象列表,但ScoreInfo对象内的Category对象列表没有。
我的控制器中有以下POST操作:
[HttpPost]
public ActionResult InterestCategories(MyMPIModel model, FormCollection form)
{
...
// model would not bind forcing me to populate via form collection
for (var i = 0; i < model.ScoreInfo.Count; i++)
{
...
for (var j = 0; j < scoreInfo.Categories.Count; j++)
{
var category = scoreInfo.Categories[j];
var prefix = "ScoreInfo[" + i + "].Categories[" + j + "]";
category.Name = form[prefix + ".Name"];
var sId = form[prefix + ".Id"];
if (sId != null) category.Id = Int32.Parse(sId);
var sChecked = form[prefix + ".Checked"];
if (sChecked != null) category.Checked = sChecked.Contains("true");
}
}
}
答案 0 :(得分:6)
您必须在Category类中使用Properties而不是Fields:
public class Category
{
public int Id { get; set; }
public string Name { get; set; }
public bool Checked { get; set; }
}