在ASP.Net MVC 5中使用DataTables行重新排序来更新值
本文关键字:新排序 排序 更新 MVC Net ASP DataTables | 更新日期: 2023-09-27 18:20:12
我需要通过datatables(www.datatables.net)中的行重新排序功能更新数据库内的OrderIndex
值。
我已经在谷歌上搜索过了,我找到了这篇文章。我遵循了所有的步骤,但无济于事。
如果你需要更多信息,请告诉我。谢谢
ViewModel
public class GenderDDUpdateOrderIndexViewModel
{
public int Id { get; set; }
public int OrderIndex { get; set; }
}
控制器
public async Task<ActionResult> UpdateRowIndex(GenderDDUpdateOrderIndexViewModel model, int? Id, int? fromPosition, int toPosition, string direction)
{
using (var ctx = new ApplicationIdentityDbContext())
{
if (direction == "back")
{
var GenderList = ctx.GenderDD
.Where(c => (toPosition <= c.OrderIndex && c.OrderIndex <= fromPosition))
.ToList();
foreach (var gender in GenderList)
{
gender.OrderIndex++;
}
}
else
{
var GenderList = ctx.GenderDD
.Where(c => (fromPosition <= c.OrderIndex && c.OrderIndex <= toPosition))
.ToList();
foreach (var gender in GenderList)
{
gender.OrderIndex--;
}
}
ctx.GenderDD.First(c => c.Id == Id).OrderIndex = toPosition;
await ctx.SaveChangesAsync();
}
return View();
}
数据表初始化
<script>
$(document).ready(function() {
var table = $('#GenderIndex').DataTable({
"paging": true,
"pagingType": "full_numbers",
rowReorder: {
snapX: 10
}
});
});
</script>
上面提到的插件不会工作,因为它非常旧。您可以方便地使用DataTables RowReorder扩展。您不需要编写这么长的操作方法,因为最新版本的DataTables不支持其中的许多参数。
控制器
public void UpdateRow(GenderDDUpdateOrderIndexViewModel model, int Id, int fromPosition, int toPosition)
{
using (var ctx = new ApplicationIdentityDbContext())
{
var GenderList = ctx.GenderDD.ToList();
ctx.GenderDD.First(c => c.OrderIndex == Id).OrderIndex = toPosition;
ctx.SaveChanges();
}
}
jQuery
<script type="text/javascript">
var table = $('#GenderIndex').DataTable({
rowReorder: true,
"paging": true,
"pagingType": "full_numbers",
fixedHeader: true,
select: false,
"order": [[0, "asc"]],
"info": true,
"processing": false,
"responsive": true,
"searching": true,
"lengthMenu": [[10, 25, 50, -1], [10, 25, 50, "All"]],
"language": {
"lengthMenu": "_MENU_",
"zeroRecords": "No records found",
"infoEmpty": "No records found",
"infoFiltered": "(filtered from _MAX_ total records)"
},
"columnDefs": [
{ "orderable": false, "targets": 8 }
]
});
$('#GenderIndex').on('row-reorder.dt', function (dragEvent, data, nodes) {
for (var i = 0, ien = data.length ; i < ien ; i++) {
var rowData = table.row(data[i].node).data();
$.ajax({
type: "GET",
cache: false,
contentType: "application/json; charset=utf-8",
url: '/GenderDD/UpdateRow',
data: { Id: rowData[0], fromPosition: data[i].oldData, toPosition: data[i].newData },
dataType: "json"
});
}
});
</script>