0

我有一个局部视图,其中包含文本字段并绑定到设置的列表,因此本质上存在一行文本字段,用户可以向其中添加另一行或从中删除一行。我通过像这样遍历列表来构建视图:

@model PricingRequestWebApp.Web.Models.PricingRequestModel

<div id="shiplocation-wrapper">
    <table class="shipinfoprtable">
        <thead>
            <tr>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].Address)<span class="formRed">*</span></th>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].City)<span class="formRed">*</span></th>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].State)<span class="formRed">*</span></th>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].Zip)<span class="formRed">*</span></th>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].PFreight)<span class="formRed">*</span></th>
                <th>@Html.LabelFor(m => m.ShippingLocationsModel[0].FreightType)<span class="formRed">*</span></th>
                <td><span class="link" id="addlocation" onclick="AddShippingLocation()">Add</span></td>
            </tr>
        </thead>
        <tbody>
            @for (int i = 0; i < Model.ShippingLocationsModel.Count; i++)
            {
                <tr>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].Address, new { @style = "width: 200px" })</td>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].City, new { @style = "width: 150px" })</td>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].State, new { @size = 3 })</td>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].Zip, new { @style = "width: 80px" })</td>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].PFreight, new { @style = "width: 80px" })</td>
                    <td>@Html.TextBoxFor(m => m.ShippingLocationsModel[i].FreightType, new { @style = "width: 200px" })</td>
                    @if (Model.ShippingLocationsModel.Count > 1)
                    {
                        <td><span class="link" id="removelocation" onclick="RemoveShippingLocation(@i);">Remove</span></td>
                    }
                </tr>
            }
        </tbody>
    </table>
</div>

我的控制器方法如下所示:

    [HttpPost]
    public ActionResult AddShippingLocation(PricingRequestModel model)
    {
        model.ShippingLocationsModel.Add(new ShippingLocationsModel());    

        return PartialView("shiplocationsPartial", model);
    }

    [HttpPost]
    public ActionResult RemoveShippingLocation(PricingRequestModel model)
    {
        model.ShippingLocationsModel.RemoveAt(StaticItems.id);

        return PartialView("shiplocationsPartial", model);
    }

还有我发布数据并返回视图的 Jquery 函数:

function AddShippingLocation() {
    $.ajax({
        data: $('#shippinginfoform').serialize(),
        type: "POST",
        url: "/PricingRequest/AddShippingLocation",
        success: function (response) {
            $('#shiplocation-wrapper').html(response);
        }
    })
}

function RemoveShippingLocation(id) {
    $.ajax({
        data: { id: id },
        type: "POST",
        url: "/PricingRequest/SaveID",
        complete: function () {
            $.ajax({
                data: $('#shippinginfoform').serialize(),
                cache: false,
                type: "POST",
                url: "/PricingRequest/RemoveShippingLocation",
                success: function (response) {
                    $('#shiplocation-wrapper').html(response);
                }
            })
        }
    })
}

现在,假设我在用户视图中创建了 4 个项目。我单击第 2 项将其删除,并将 i 作为 id 传入。然后,我将其从模型列表中删除,并使用更新的模型传回视图。我现在已经调试了至少 50 次,并且控制器方法看起来与它应该的完全一样,并且视图中的数据也是如此。令人费解的是,尽管 ajax 上的响应与我在调试时看到的不同。单击删除项目 2 会删除项目 4。如果我有 5 个项目,则无论我单击要删除什么项目,都会删除项目 5。它始终是被删除的最后一项。我知道我必须在这里遗漏一些东西,但我看不到什么。有任何想法吗?谢谢。

4

1 回答 1

0

您的代码的问题是您正在为您的集合使用顺序索引,并且在添加/删除留下间隙的元素时没有重新计算这些索引,这会阻止模型绑定器正确运行。作为替代方案,您可以使用非顺序索引,如following blog post.

于 2012-11-04T13:53:17.637 回答