MVC 3:将带有字典字段的模型传递给Controller

时间:2013-03-15 01:24:31

标签: asp.net-mvc-3

我正为网格生成以下hml:

<form method="POST" action="home/Edit">
 <table>
   <thead>
     <tr>
       <th> Level </th>
       <th> Cost </th>
       <th> Test </th>
     </tr>
   </thead>
   <tbody>
     <tr>
       <td> <input type='text' name="Prize[0].Level" value='1' /> </td>
       <td> <input type='text' name="Prize[0].Cost" value='$1.00' /> </td>
       <td> <input type='text' name="Prize[0].Properties['Test'].Name" value='Passed' /> </td>
     </tr>
     <tr>
       <td> <input type='text' name="Prize[1].Level" value='2' /> </td>
       <td> <input type='text' name="Prize[1].Cost" value='$2.00' /> </td>
       <td> <input type='text' name="Prize[1].Properties['Test'].Name" value='Failed' /> </td>
     </tr>
   </tbody>
 </table>
 <input type="submit"/>
</form>

我的家庭控制器有一个方法:

[HttpPost]
public ActionResult Edit(PrizelevelsModel model) { ... }

模型定义如下:

public class PrizelevelsModel
{
    public PrizeLevel[] Prize { get; set; }
}

public class PrizeLevel
{
    public readonly Dictionary<string, PrizeLevelProperty> Properties = new Dictionary<string, PrizeLevelProperty>();

    public int Level { get; set; }
    public decimal Cost { get; set; }
}

public class PrizeLevelProperty
{
    public int Ordinal { get; set; }
    public string Name { get; set; }
    public object Value { get; set; }
}

当我点击提交时,MVC用Prize [2]膨胀我的模型,数组中的每个Prizelevel都有正确的Level和Cost,但是Properties字典有0个元素。如何让MVC添加到每个Prize的Properties字典中,使用“Test”键和一个新的PrizeLevelProperty元素,并在每个Prize的表单中设置名称?

换句话说,当我调试我的控制器方法时,我想看看:

model.Prize[0].Level == 1  // this works ok
model.Prize[0].Cost == "$1.00"  // and so does this
model.Prize[0].Properties["Test"].Name" == "Passed"  // but not this, instead model.Prize[0].Properties.Count == 0

1 个答案:

答案 0 :(得分:0)

这篇文章非常符合您的要求:http://www.hanselman.com/blog/ASPNETWireFormatForModelBindingToArraysListsCollectionsDictionaries.aspx

MVC 3中的默认模型绑定器将绑定字典,您可以在其中指定项目的键和值,因此在您的情况下,它将如下所示:

<form method="POST" action="home/Edit">
 <table>
   <thead>
     <tr>
       <th> Level </th>
       <th> Cost </th>
       <th> Test </th>
     </tr>
   </thead>
   <tbody>
     <tr>
       <td> <input type='text' name="Prize[0].Level" value='1' /> </td>
       <td> <input type='text' name="Prize[0].Cost" value='$1.00' /> </td>
       <td> 
            <input type='text' name="Prize[0].Properties[0].Key" value='Test' />
            <input type='text' name="Prize[0].Properties[0].Value.Name" value='Passed' />
      </td>
     </tr>
     <tr>
       <td> <input type='text' name="Prize[1].Level" value='2' /> </td>
       <td> <input type='text' name="Prize[1].Cost" value='$2.00' /> </td>
       <td> 
            <input type='text' name="Prize[0].Properties[0].Key" value='Test' />
            <input type='text' name="Prize[0].Properties[0].Value.Name" value='Failed' />
       </td>
     </tr>
   </tbody>
 </table>
 <input type="submit"/>
</form>

虽然你可能会隐藏密钥,具体取决于你想要实现的目的。