我正在编写我的第一个MVC3应用程序,它是一个简单的订单跟踪应用程序。我想同时编辑订单和详细信息。当我编辑订单时,Edit的ActionResult返回该订单和相关行(我也使用EF)。

public ActionResult Edit(int id)
    {
        // Get the order with the order lines
        var orderWithLines = from o in db.Orders.Include("OrderLines")
                                where o.ID == id
                                select o;

        // Not sure if this is the best way to do this.
        // Need to find a way to cast to "Order" type
        List<Order> orderList = orderWithLines.ToList();
        Order order = orderList[0];

        // Use ViewData rather than passing in the object in the View() method.
        ViewData.Model = order;
        return View();
    }


顺序和行显示没有问题,但是当我保存页面时,没有任何行传递回控制器。只有命令。这是查看代码。

    @model OrderTracker.Models.Order

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>

@using (Html.BeginForm())
{
    <fieldset>
        <legend>Order</legend>

        @Html.HiddenFor(model => model.ID)
        @Html.HiddenFor(model => model.UserId)

        <div>
            @Html.LabelFor(model => model.OrderDate)
        </div>
        <div>
            @Html.EditorFor(model => model.OrderDate)
        </div>
        <div>
            @Html.LabelFor(model => model.Description)
        </div>
        <div>
            @Html.EditorFor(model => model.Description)
        </div>

        <table>
            <tr>
                <th>
                    Description
                </th>
                <th>
                    Quantity
                </th>
                <th>
                    Weight
                </th>
                <th>
                    Price
                </th>
                <th></th>
            </tr>
        @foreach (var line in Model.OrderLines)
        {
            <tr>
                <td>
                    @Html.EditorFor(modelItem => line.Description)
                </td>
                <td>
                    @Html.EditorFor(modelItem => line.Quantity)
                </td>
                <td>
                    @Html.EditorFor(modelItem => line.Weight)
                </td>
                <td>
                    @Html.EditorFor(modelItem => line.Price)
                </td>
            </tr>
        }
        </table>


        <p>
            <input type="submit" value="Save" />
        </p>

    </fieldset>
}


我可以获取有关保存行数据和订单数据的最佳方法的一些指导吗?

谢谢。

最佳答案

您面临的问题与ICollection<T>控件生成的名称有关。这是他的detailed discussion by Phil Haack和解决方案(根据@Html扩展方法;从他的博客文章结尾处的链接下载示例项目)。该职位针对MVC / MVC2;但是它仍然适用于MVC3。

另外,如果您不想遵循该技巧,则可以为EditorTemplate实体模型选择OrderLine

步骤如下。

1)在(Views ->Shared -> EditorTemplates -> OrderLine.cshtml)下创建编辑器模板
EditorTemplates下创建一个名为Shared的文件夹很重要,模板名称应与您要为其创建模板的EntityModel相同;因此名称OrderLine.cshtml



2)OrderLine.cshtml的代码

@model OrderTracker.Models.OrderLine
@{
    Layout = null;
}

<!DOCTYPE html>
@Html.HiddenFor(modelItem => Model.id)
<tr>
<td>
    @Html.EditorFor(modelItem => Model.Description)
</td>
<td>
    @Html.EditorFor(modelItem => Model.Quantity)
</td>
<td>
    @Html.EditorFor(modelItem => Model.Weight)
</td>
<td>
    @Html.EditorFor(modelItem => Model.Price)
</td>
</tr>


3)使用此代码编辑视图(请注意,我已经使用EditorFor进行OrderLines收集)

@model OrderTracker.Models.Order

@{
    ViewBag.Title = "Edit";
}

<h2>Edit</h2>

@using (Html.BeginForm())
{
    <fieldset>
        <legend>Order</legend>

        @Html.HiddenFor(model => model.ID)
        @Html.HiddenFor(model => model.UserId)

        <div>
            @Html.LabelFor(model => model.OrderDate)
        </div>
        <div>
            @Html.EditorFor(model => model.OrderDate)
        </div>
        <div>
            @Html.LabelFor(model => model.Description)
        </div>
        <div>
            @Html.EditorFor(model => model.Description)
        </div>
        <div>
        <table>
            <tr>
                <th>
                    Description
                </th>
                <th>
                    Quantity
                </th>
                <th>
                    Weight
                </th>
                <th>
                    Price
                </th>
            </tr>
            @Html.EditorFor(model => model.OrderLines)
            </table>
        </div>
        <p>
            <input type="submit" value="Save" />
        </p>

    </fieldset>
}


4)现在回发,您将看到值

关于c# - 从MVC View 保存多个对象,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/11167538/

10-10 02:22