您好我正在使用Ajax Methode填充DataTable我已经测试了我的Web API并且它正常工作但我不断收到此消息No data available in table
jQuery代码：
// DataTables
var table = $("#table").DataTable({
ajax: {
url: "/api/picklist/getpicklist",
dataSrc:"",
},
columns: [
{
data:"numero_picklist"
},
{
data:"PFIN"
}
]
});
HTML表：
<table id="table" class="table table-bordered table-hover table-responsive table-striped">
<thead>
<tr>
<th>Numéro picklist</th>
</tr>
</thead>
</table>
网络API：
// GET /api/picklist
public IEnumerable<PicklistDto> GetPicklist()
{
return _context.Dimension_picklist.ToList().Select(Mapper.Map<Dimension_picklist,PicklistDto>);
}
Web API测试： enter image description here
答案 0 :(得分：0)
您可以执行以下操作来帮助您进行调试。我的猜测是你的数据不在你的json目标上。
var table = $("#table").DataTable({
ajax: {
url: "/api/picklist/getpicklist",
dataSrc:"",
// add this
dataFilter: function(res) {
// to see what actual data is being sent from the server.
// you can check to make sure that your data is where you think it is (some servers wrap data in other object, for example,
// Microsoft web services puts the data in an object call d.
console.log(res);
return res;
},
error: function(err, status){
// add this section to record any errors
console.log(err);
}
},
columns: [
{
data:"numero_picklist"
},
{
data:"PFIN"
}
]
});
答案 1 :(得分：0)
首先，您需要学习数据表和数据表的分析。它的参数。 在ajax上，它将一些参数发送到目标方法来获取记录和过滤。我已经使用了包含该参数的DTParameters。
这是ActionMethod
[System.Web.Http.HttpPost]
public IHttpActionResult loadData(DTParameters param)
{
//Us IQuerable for server side processings -filterning and pagination
//i m just doing testing
var ListData = getList();
//take and skip record according to pagination
var takeData = ListData.Skip(param.Start).Take(param.Length).ToList();
// IF searching value is not null
if (param.Search.Value != null && param.Search.Value != "")
{
var sendData = takeData.Where(p => p.numero_picklist != null && p.numero_picklist.ToLower().Contains(param.Search.Value.ToLower())
|| p.PFIN != null && p.PFIN.ToLower().Contains(param.Search.Value.ToLower())).ToList();
DTResult<PicklistDto> result = new DTResult<PicklistDto>
{
draw = param.Draw,
data = sendData.ToList(),
recordsFiltered = ListData.Count(), // total number of record
recordsTotal = ListData.Count(), // total number of record
};
return Json(result);
}
else
{
var sendData = takeData;
DTResult<PicklistDto> result = new DTResult<PicklistDto>
{
draw = param.Draw,
data = sendData.ToList(),
recordsFiltered = ListData.Count(), // total number of record
recordsTotal = ListData.Count(), // total number of record
};
return Json(result);
}
}
index.chsml数据表脚本
<!doctype html>
<html>
<head>
<title>@ViewBag.Title - MVC Datatables App</title>
</head>
<body>
<div class="container">
<h3> Report</h3>
<table class="table table-striped" id="datatab">
<thead>
<tr>
<th>
numero_picklist
</th>
<th>
PFIN
</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
</div>
</body>
</html>
<link href="~/Content/bootstrap.min.css" rel="stylesheet" />
<link href="~/Content/dataTables.scroller.min.css" rel="stylesheet" />
<script src="~/Scripts/jquery-1.11.3.min.js"></script>
<script src="~/Scripts/jquery.dataTables.min.js"></script>
<script>
//initiate dataTables plugin
$('#datatab')
//.wrap("<div class='dataTables_borderWrap' />") //if you are applying horizontal scrolling (sScrollX)
.DataTable({
"bProcessing": true,
"bServerSide": true,
//"serverSide": true,
"ajax": {
"type": "POST",
"url":'/DataTable/loadData',
"contentType":'application/json; charset=utf-8',
'data': function (data) {
//console.log(data);
return data = JSON.stringify(data);
},
//dataSrc: '',
},
"paging": true,
//"deferRender": true,
"columns": [
{ "data": "numero_picklist" },
{ "data": "PFIN" },
],
"order": [0, "asc"],
bAutoWidth: false,
});
</script>
创建模态类＆＃39; DatatablesViewModel＆＃39;保存，导入控制器。
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
///This view model class has been referred from example created by Marien Monnier at Soft.it. All credits to Marien for this class
namespace MVCDatatableApp.Models
{
/// <summary>
/// A full result, as understood by jQuery DataTables.
/// </summary>
/// <typeparam name="T">The data type of each row.</typeparam>
public class DTResult<T>
{
/// <summary>
/// The draw counter that this object is a response to - from the draw parameter sent as part of the data request.
/// Note that it is strongly recommended for security reasons that you cast this parameter to an integer, rather than simply echoing back to the client what it sent in the draw parameter, in order to prevent Cross Site Scripting (XSS) attacks.
/// </summary>
public int draw { get; set; }
/// <summary>
/// Total records, before filtering (i.e. the total number of records in the database)
/// </summary>
public int recordsTotal { get; set; }
/// <summary>
/// Total records, after filtering (i.e. the total number of records after filtering has been applied - not just the number of records being returned for this page of data).
/// </summary>
public int recordsFiltered { get; set; }
/// <summary>
/// The data to be displayed in the table.
/// This is an array of data source objects, one for each row, which will be used by DataTables.
/// Note that this parameter's name can be changed using the ajaxDT option's dataSrc property.
/// </summary>
public List<T> data { get; set; }
}
/// <summary>
/// The additional columns that you can send to jQuery DataTables for automatic processing.
/// </summary>
public abstract class DTRow
{
/// <summary>
/// Set the ID property of the dt-tag tr node to this value
/// </summary>
public virtual string DT_RowId
{
get { return null; }
}
/// <summary>
/// Add this class to the dt-tag tr node
/// </summary>
public virtual string DT_RowClass
{
get { return null; }
}
/// <summary>
/// Add this data property to the row's dt-tag tr node allowing abstract data to be added to the node, using the HTML5 data-* attributes.
/// This uses the jQuery data() method to set the data, which can also then be used for later retrieval (for example on a click event).
/// </summary>
public virtual object DT_RowData
{
get { return null; }
}
}
/// <summary>
/// The parameters sent by jQuery DataTables in AJAX queries.
/// </summary>
public class DTParameters
{
/// <summary>
/// Draw counter.
/// This is used by DataTables to ensure that the Ajax returns from server-side processing requests are drawn in sequence by DataTables (Ajax requests are asynchronous and thus can return out of sequence).
/// This is used as part of the draw return parameter (see below).
/// </summary>
public int Draw { get; set; }
/// <summary>
/// An array defining all columns in the table.
/// </summary>
public DTColumn[] Columns { get; set; }
/// <summary>
/// An array defining how many columns are being ordering upon - i.e. if the array length is 1, then a single column sort is being performed, otherwise a multi-column sort is being performed.
/// </summary>
public DTOrder[] Order { get; set; }
/// <summary>
/// Paging first record indicator.
/// This is the start point in the current data set (0 index based - i.e. 0 is the first record).
/// </summary>
public int Start { get; set; }
/// <summary>
/// Number of records that the table can display in the current draw.
/// It is expected that the number of records returned will be equal to this number, unless the server has fewer records to return.
/// Note that this can be -1 to indicate that all records should be returned (although that negates any benefits of server-side processing!)
/// </summary>
public int Length { get; set; }
/// <summary>
/// Global search value. To be applied to all columns which have searchable as true.
/// </summary>
public DTSearch Search { get; set; }
/// <summary>
/// Custom column that is used to further sort on the first Order column.
/// </summary>
public string SortOrder
{
get
{
return Columns != null && Order != null && Order.Length > 0
? (Columns[Order[0].Column].Data + (Order[0].Dir == DTOrderDir.DESC ? " " + Order[0].Dir : string.Empty))
: null;
}
}
}
/// <summary>
/// A jQuery DataTables column.
/// </summary>
public class DTColumn
{
/// <summary>
/// Column's data source, as defined by columns.data.
/// </summary>
public string Data { get; set; }
/// <summary>
/// Column's name, as defined by columns.name.
/// </summary>
public string Name { get; set; }
/// <summary>
/// Flag to indicate if this column is searchable (true) or not (false). This is controlled by columns.searchable.
/// </summary>
public bool Searchable { get; set; }
/// <summary>
/// Flag to indicate if this column is orderable (true) or not (false). This is controlled by columns.orderable.
/// </summary>
public bool Orderable { get; set; }
/// <summary>
/// Specific search value.
/// </summary>
public DTSearch Search { get; set; }
}
/// <summary>
/// An order, as sent by jQuery DataTables when doing AJAX queries.
/// </summary>
public class DTOrder
{
/// <summary>
/// Column to which ordering should be applied.
/// This is an index reference to the columns array of information that is also submitted to the server.
/// </summary>
public int Column { get; set; }
/// <summary>
/// Ordering direction for this column.
/// It will be dt-string asc or dt-string desc to indicate ascending ordering or descending ordering, respectively.
/// </summary>
public DTOrderDir Dir { get; set; }
}
/// <summary>
/// Sort orders of jQuery DataTables.
/// </summary>
public enum DTOrderDir
{
ASC,
DESC
}
/// <summary>
/// A search, as sent by jQuery DataTables when doing AJAX queries.
/// </summary>
public class DTSearch
{
/// <summary>
/// Global search value. To be applied to all columns which have searchable as true.
/// </summary>
public string Value { get; set; }
/// <summary>
/// true if the global filter should be treated as a regular expression for advanced searching, false otherwise.
/// Note that normally server-side processing scripts will not perform regular expression searching for performance reasons on large data sets, but it is technically possible and at the discretion of your script.
/// </summary>
public bool Regex { get; set; }
}
}
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