ASP.NET MVC-添加到视图模型列表并提交

Question

我有一个带有订单/odc请求表单的ASP.NET MVC程序。我想做的是允许用户为要批准的项目列表下订单。我将视图模型传递给表单/视图，其中包含一些字段，包括订单项对象列表。我可以动态地将行添加到显示订单项目列表的表中，但在提交时，视图模型列表中没有任何内容。我做错了什么？如何将输入到表中的项目传递到视图，以便提交到数据库？

控制器

public ActionResult NewOdc()
{
var viewModel = new NewOdcViewModel()
{
OdcItems = new List<tblOdcItem>() 
};
viewModel.OdcItems.Add(new tblOdcItem());
return View(viewModel);
}

我从jQuery调用此代码来向列表中添加一个新项目：

public ActionResult GetView(string rowCount)
{
tblOdcItem item = new tblOdcItem();
return PartialView("_OdcItemEditor", item);
}

在提交时，我称之为代码：

[HttpPost]
public ActionResult NewOdcSubmit(NewOdcViewModel viewModel)
{
_context.tblOdcs.Add(new tblOdc());
...

我使用foreach浏览列表，并为每个项目创建一个分部。

视图：

@using (Html.BeginForm("NewOdcSubmit", "Odc", FormMethod.Post))
{
if (Model != null)
{
@Html.HiddenFor(m => m.OdcItems);
}
<div class="panel panel-info">
<div class="panel-heading">
<h2 class="panel-title">Enter New ODC</h2>
</div>
<div class="panel-body">
@Html.AntiForgeryToken()
<div class="form-group">
@Html.LabelFor(model => model.User.UserName, new { @class = "col-md-2 col-sm-1 control-label" })
<div class="col-md-2 col-sm-3">
@Html.TextBoxFor(model => model.User.UserName, new { @Value = ((PM_Portal2020.Models.tblUser)Session["User"]).UserName, @readonly = true })
</div>
@Html.LabelFor(model => model.User.Phone, new { @class = "col-md-2 col-sm-1 control-label" })
<div class="col-md-2 col-sm-3">
@Html.TextBoxFor(model => model.User.Phone, new { @Value = ((PM_Portal2020.Models.tblUser)Session["User"]).Phone })
</div>
</div>
<div class="form-group col-md-10 col-sm-12">
<label>Expenses</label>
<table id="submissionTable" class="table table-bordered">
<thead>
<tr>
<th>Qty</th>
<th>Description</th>
<th>Estimated Cost</th>
</tr>
</thead>
<tbody>
@foreach (PM_Portal2020.Models.tblOdcItem item in Model.OdcItems)
{
@Html.Partial("_OdcItemEditor", item)
}
</tbody>
</table>
<p>
<button id="add" type="button" class="btn btn-primary">Add</button>
</p>
</div>
<div class="form-group col-lg-10 col-sm-12">
@Html.LabelFor(model => model.Details, new { @class = "col-md-2 col-sm-1 control-label" })
<div class="">
@Html.TextAreaFor(model => model.Details, new { @class = "form-control" })
</div>
</div>
</div>
<div class="panel-footer">
<div class="">
<button type="submit" class="btn btn-success">Save</button>&nbsp;&nbsp;
@Html.ActionLink("Back", "Index")
</div>
</div>
</div>
}

Shared文件夹中的PartialView：

@model PM_Portal2020.Models.tblOdcItem
<tr @Html.Id("tablerow" + Model.ID)>
<td>
<div class="editor-field">
@Html.TextBoxFor(model => model.Quantity, new { @class = "text-box single-line", name = "Quantity[" + Model.ID + "]", type = "text", value = "", required = "required" })
</div>
</td>
<td>
<div class="editor-field">
@Html.TextBoxFor(model => model.Description, new { @class = "text-box single-line", name = "Description[" + Model.ID + "]", type = "text", value = "", required = "required", id = "itemDesc" })
</div>
</td>
<td>
<div class="editor-field">
@Html.TextBoxFor(model => model.EstimatedCost, new { @class = "text-box single-line", name = "EstimatedCost[" + Model.ID + "]", type = "text", value = "", required = "required" })
</div>
</td>
<td>
<button type="button" class="btn btn-primary" onclick="removeTr(this);">
<span class="glyphicon glyphicon-trash"></span>
</button>
</td>
</tr>

查看模型

public class NewOdcViewModel
{
public NewOdcViewModel()
{
}
public IList<tblOdcItem> OdcItems { get; set; }
public string Details { get; set; }
public int OdcId { get; set; }
public tblUser User { get; set; }
}

它提交给控制器，但odcitems列表总是count=0。任何帮助都会很棒。感谢

Answer 1

这是javascript示例，只需在添加/删除操作中使用此函数即可重新排列名称。

function RearangeName(){
var i = 0;
$("#submissionTable>tbody>tr").each(function () {
$(this).find("input").each(function () {
if ($(this).prop("name").indexOf('Quantity') > 0) {
$(this).attr('name', "OdcItems[" + i + "].Quantity");
}
if ($(this).prop("name").indexOf('Description') > 0) {
$(this).attr('name', "OdcItems[" + i + "].Description");
}
if ($(this).prop("name").indexOf('EstimatedCost') > 0) {
$(this).attr('name', "OdcItems[" + i + "].EstimatedCost");
}
});
i++;
});
}

Answer 2

名称应该与模型属性匹配，因此在局部视图中，您将名称设置为OdcItems[0]。Quantity，而不是Quantity[quot；+model.ID+quot；]。

@Html.TextBoxFor(model => model.Quantity, new { @class = "text-box single-line", name = "OdcItems[0].Quantity", type = "text", value = "", required = "required" })

例如。OdcItems[0]。数量

OdcItems[1].数量

OdcItems[2]数量

OdcItems[n].数量