POST表单数组没有成功
Van*_*nel 38 html c# forms asp.net-mvc
我正在使用C#和.NET Framework 4.5.1开发ASP.NET MVC 5 Web.
我form在一个cshtml文件中有这个:
@model MyProduct.Web.API.Models.ConnectBatchProductViewModel
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Create</title>
</head>
<body>
@if (@Model != null)
{
<h4>Producto: @Model.Product.ProductCode, Cantidad: @Model.ExternalCodesForThisProduct</h4>
using (Html.BeginForm("Save", "ConnectBatchProduct", FormMethod.Post))
{
@Html.HiddenFor(model => model.Product.Id, new { @id = "productId", @Name = "productId" });
<div>
<table id ="batchTable" class="order-list">
<thead>
<tr>
<td>Cantidad</td>
<td>Lote</td>
</tr>
</thead>
<tbody>
<tr>
<td>@Html.TextBox("ConnectBatchProductViewModel.BatchProducts[0].Quantity")</td>
<td>@Html.TextBox("ConnectBatchProductViewModel.BatchProducts[0].BatchName")</td>
<td><a class="deleteRow"></a></td>
</tr>
</tbody>
<tfoot>
<tr>
<td colspan="5" style="text-align: left;">
<input type="button" id="addrow" value="Add Row" />
</td>
</tr>
</tfoot>
</table>
</div>
<p><input type="submit" value="Seleccionar" /></p>
}
}
else
{
<div>Error.</div>
}
<script src="~/Scripts/jquery-2.1.3.min.js"></script>
<script src="~/js/createBatches.js"></script> <!-- Resource jQuery -->
</body>
</html>
这是动作方法:
[HttpPost]
public ActionResult Save(FormCollection form)
{
return null;
}
这两个ViewModel:
public class BatchProductViewModel
{
public int Quantity { get; set; }
public string BatchName { get; set; }
}
public class ConnectBatchProductViewModel
{
public Models.Products Product { get; set; }
public int ExternalCodesForThisProduct { get; set; }
public IEnumerable<BatchProductViewModel> BatchProducts { get; set; }
}
但是我在FormCollection formvar中得到了这个:
但是我希望得到一个IEnumerable<BatchProductViewModel> model:
public ActionResult Save(int productId, IEnumerable<BatchProductViewModel> model);
如果我使用上面的方法签名,则两个参数都为null.
我想要一个IEnumerable因为用户将使用jQuery动态添加更多行.
这是jQuery脚本:
jQuery(document).ready(function ($) {
var counter = 0;
$("#addrow").on("click", function () {
counter = $('#batchTable tr').length - 2;
var newRow = $("<tr>");
var cols = "";
var quantity = 'ConnectBatchProductViewModel.BatchProducts[0].Quantity'.replace(/\[.{1}\]/, '[' + counter + ']');
var batchName = 'ConnectBatchProductViewModel.BatchProducts[0].BatchName'.replace(/\[.{1}\]/, '[' + counter + ']');
cols += '<td><input type="text" name="' + quantity + '"/></td>';
cols += '<td><input type="text" name="' + batchName + '"/></td>';
cols += '<td><input type="button" class="ibtnDel" value="Delete"></td>';
newRow.append(cols);
$("table.order-list").append(newRow);
counter++;
});
$("table.order-list").on("click", ".ibtnDel", function (event) {
$(this).closest("tr").remove();
counter -= 1
$('#addrow').attr('disabled', false).prop('value', "Add Row");
});
});
任何的想法？
小智 31
您需要在for循环中生成集合的控件,以便使用索引器正确命名它们(请注意属性BatchProducts需要IList<BatchProductViewModel>
@using (Html.BeginForm("Save", "ConnectBatchProduct", FormMethod.Post))
{
....
<table>
....
@for(int i = 0; i < Model.BatchProducts.Count; i++)
{
<tr>
<td>@Html.TextBoxFor(m => m.BatchProducts[i].Quantity)</td>
<td>@Html.TextBoxFor(m => m.BatchProducts[i].BatchName)</td>
<td>
// add the following to allow for dynamically deleting items in the view
<input type="hidden" name="BatchProducts.Index" value="@i" />
<a class="deleteRow"></a>
</td>
</tr>
}
....
</table>
....
}
然后需要POST方法
public ActionResult Save(ConnectBatchProductViewModel model)
{
....
}
编辑
注意:在编辑之后,如果要BatchProductViewModel在视图中动态添加和删除项目,则需要使用本答案中BeginCollectionItem讨论的帮助程序或html模板
动态添加新项目的模板将是
<div id="NewBatchProduct" style="display:none">
<tr>
<td><input type="text" name="BatchProducts[#].Quantity" value /></td>
<td><input type="text" name="BatchProducts[#].BatchName" value /></td>
<td>
<input type="hidden" name="BatchProducts.Index" value ="%"/>
<a class="deleteRow"></a>
</td>
</tr>
</div>
请注意,虚拟索引器和隐藏输入的不匹配值会阻止此模板回发.
然后添加新的脚本BatchProducts将是
$("#addrow").click(function() {
var index = (new Date()).getTime(); // unique indexer
var clone = $('#NewBatchProduct').clone(); // clone the BatchProducts item
// Update the index of the clone
clone.html($(clone).html().replace(/\[#\]/g, '[' + index + ']'));
clone.html($(clone).html().replace(/"%"/g, '"' + index + '"'));
$("table.order-list").append(clone.html());
});