提交包含模型集合的表单

时间:2012-05-29 10:35:28

标签: c# .net asp.net-mvc asp.net-mvc-3 razor

我有一个ViewModel,它包含我的Model类型的集合,如下所示:

public class OrderConfirm
{
    public ICollection<QuoteLine> SalesLines { get; set; }
    public string Currency { get; set; }
    public int EnquiryID { get; set; }
}

我的QuoteLine模型如下:

public class QuoteLine
{
    public int QuoteLineId { get; set; }
    public int LostReasonId { get; set; }
    public virtual LostReason LostReason { get; set; }
    public string ItemName { get; set; }
}

在我的视图中,然后我在表单中迭代这些QuoteLines中的每一个,如下所示:

@using (Ajax.BeginForm("ConfirmLostOrder", new AjaxOptions()
{
    InsertionMode = InsertionMode.Replace,
    UpdateTargetId = "LostOrders",
    OnBegin = "LostOrderConfirm"
}))
    {
        <table class="completed-enq-table">
            <tr>
                <th>
                    Item Number
                </th>
                <th>
                    Reason
                </th>
            </tr>
            @foreach (var sales in Model.SalesLines)
            {
                <tr>
                    <td>@sales.ItemName
                        @Html.HiddenFor(model => sales.QuoteLineID)
                    </td>
                    <td>@Html.DropDownListFor(model => sales.LostReasonId, ((IEnumerable<myApp.Models.LostReason>)ViewBag.LostReasons).Select(option => new SelectListItem
       {
           Text = (option == null ? "None" : option.LostReason),
           Value = option.LostReasonId.ToString(),
           Selected = (Model != null) && (option.LostReasonId == sales.LostStatusId)
       }))
                    </td>
                </tr>
            }
        </table>
        <input type="submit" style="float: right;" value="Submit Lost Order" />
    }

然后我的HttpPost动作如下:

[HttpPost]
public ActionResult ConfirmLostOrder(List<QuoteLine> models)
{   
    // process order
    return PartialView("Sales/_ConfirmLostOrder");
}

问题是,models为空。如果我使用FormCollection我可以看到提交的每个值,但我想使用我的模型而不是FormCollection,因为我想处理和编辑每个单独提交的行他们可能有不同的理由

1 个答案:

答案 0 :(得分:4)

在此实例中不能使用foreach,它必须是for循环,以便字段的name属性包含正确的索引,以便默认模型绑定知道它绑定到列表。

首先,我要将您的下拉值移出ViewBag(他们应该真的在那里)。这也会在您的视图中删除一些讨厌的逻辑:)

所以你的模型现在是:

public class OrderConfirm
{
    public List<QuoteLine> SalesLines { get; set; }
    public string Currency { get; set; }
    public int EnquiryID { get; set; }
    public SelectList LostReasons { get; set; }
}

尝试此操作而不是foreach

@for (var i = 0; i < Model.SalesLines.Count; i++)
{
    <tr>
        <td>
            @Model.SalesLines[i].ItemName
            @Html.HiddenFor(m => m.SalesLines[i].QuoteLineId)
            @Html.HiddenFor(m => m.SalesLines[i].ItemName) //assuming you want this
        </td>
        <td>
            @Html.DropDownListFor(m => m.SalesLines[i].LostReasonId, Model.LostReasons)
       </td>
   </tr>
}

然后更改您的帖子方法以获取OrderConfirm模型类型:

[HttpPost]
public ActionResult ConfirmLostOrder(OrderConfirm model)