无法使用 Ajax 调用更新 DataTable 的正文

Question

我有一个 DataTable，我试图通过 ajax 调用加载数据，但第一行数据总是显示：

“表中没有可用数据”

但在它下面包含了加载的 ajax 数据。如何删除 No data 行并将 ajax 数据加载到该位置？

代码如下：

<div class="box-body">
  <table id="changeTicketsTable" class="table table-bordered table-striped">
    <thead>
      <tr>
        <th>Ticket Number</th>
        <th>Description</th>
        <th>Risk</th>
        <th>Primary CI</th>
        <th>State</th>
        <th>Planned Start Date</th>
        <th>Actual Start Date</th>
        <th>Actual End Date</th>
        <th>Affected Partners</th>
      </tr>
    </thead>
    <tbody>  

    </tbody>
    <tfoot>
      <tr>
        <th>Ticket Number</th>
        <th>Description</th>
        <th>Risk</th>
        <th>Primary CI</th>
        <th>State</th>
        <th>Planned Start Date</th>
        <th>Actual Start Date</th>
        <th>Actual End Date</th>
        <th>Affected Partners</th>
      </tr>
    </tfoot>
  </table>
</div>

DataTable的实现：

<script>
    getChangeTicketInformation();
    $('#changeTicketsTable').DataTable({
      "pageLength": 5,
      'paging'      : true,
      'lengthChange': true,
      'searching'   : false,
      'ordering'    : true,
      'info'        : true,
      'autoWidth'   : false
    });
  })
</script>

用于进行 Ajax 调用的 Javascript：

function getChangeTicketInformation(){
  $.ajax({
     type: "GET",
     url: "../../get_change_ticket_info",
      success: function(data) {
        $.each(data, function (i, item) {
         $('#changeTicketsTable').find('tbody').append(
            '<tr>' +
            '<td>' + item.number + '</td>' +
            '<td>' + item.short_description + '</td>' +
            '<td>' + item.risk + '</td>' +
            '<td>' + item.cmdb_ci_display_value + '</td>' +
            '<td>' + item.state + '</td>' +
            '<td>' + item.start_date + '</td>' +
            '<td>' + item.work_start + '</td>' +
            '<td>' + item.work_end + '</td>' +
            '<td>' + 'FILL IN' + '</td>'
            + '</tr>');
        });
      }
    });
}

Answer 1

在 Chrome 中打开开发者工具，然后在您的页面中输入 JUST jQuery（也在下方），看看会发生什么。然后检查 html 并查看它是否按预期更新 - 它可能在那里，但可能被隐藏。

但更好的方法实际上是使用 DataTable 的内置 ajax 功能： https://datatables.net/examples/ajax/simple.html

$('#changeTicketsTable').find('tbody').append(
            '<tr>' +
            '<td>' + item.number + '</td>' +
            '<td>' + item.short_description + '</td>' +
            '<td>' + item.risk + '</td>' +
            '<td>' + item.cmdb_ci_display_value + '</td>' +
            '<td>' + item.state + '</td>' +
            '<td>' + item.start_date + '</td>' +
            '<td>' + item.work_start + '</td>' +
            '<td>' + item.work_end + '</td>' +
            '<td>' + 'FILL IN' + '</td>'
            + '</tr>');
        });

Answer 2

借助 DataTable，您可以使用以下 API 添加新行：

row.add()：向表中添加新行。

function getChangeTicketInformation() {
        var data = [{number: 1, short_description: '1', risk: 1, cmdb_ci_display_value: 1, state: '1', start_date: '1', work_start: '1', work_end: '1'},
            {number: 2, short_description: '2', risk: 2, cmdb_ci_display_value: 2, state: '2', start_date: '2', work_start: '2', work_end: '2'},
            {number: 3, short_description: '3', risk: 3, cmdb_ci_display_value: 3, state: '3', start_date: '3', work_start: '3', work_end: '3'}];
        //$.ajax({
            //type: "GET",
            //url: "../../get_change_ticket_info",
            //success: function (data) {
                var dti = $('#changeTicketsTable').DataTable();
                $.each(data, function (i, item) {
                    dti.row.add([
                        item.number,
                        item.short_description,
                        item.risk,
                        item.cmdb_ci_display_value,
                        item.state,
                        item.start_date,
                        item.work_start,
                        item.work_end,
                        'FILL IN'
                    ]).draw(false);
                });
            //}
            //});
    }

$('#changeTicketsTable').DataTable({
    "pageLength": 5,
    'paging': true,
    'lengthChange': true,
    'searching': false,
    'ordering': true,
    'info': true,
    'autoWidth': false
})
getChangeTicketInformation();

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link rel="stylesheet" href="//cdn.datatables.net/1.10.19/css/jquery.dataTables.min.css">
<script src="//cdn.datatables.net/1.10.19/js/jquery.dataTables.min.js"></script>


<div class="box-body">
    <table id="changeTicketsTable" class="table table-bordered table-striped">
        <thead>
        <tr>
            <th>Ticket Number</th>
            <th>Description</th>
            <th>Risk</th>
            <th>Primary CI</th>
            <th>State</th>
            <th>Planned Start Date</th>
            <th>Actual Start Date</th>
            <th>Actual End Date</th>
            <th>Affected Partners</th>
        </tr>
        </thead>
        <tbody>

        </tbody>
        <tfoot>
        <tr>
            <th>Ticket Number</th>
            <th>Description</th>
            <th>Risk</th>
            <th>Primary CI</th>
            <th>State</th>
            <th>Planned Start Date</th>
            <th>Actual Start Date</th>
            <th>Actual End Date</th>
            <th>Affected Partners</th>
        </tr>
        </tfoot>
    </table>
</div>

Answer 3

我可以给你一个简单的例子，this.get array response from your ajax url and set them as following 制作<tbody id='table_tbody_id'></tbody>and

试试这个

function getChangeTicketInformation() {
$.ajax({
    type: "GET",
    url: "../../get_change_ticket_info",
    success: function (data) {

        for (let i in data) {
            let item = data[i];
            let number = item[0];
            let short_description = item[1];
            let risk = item[2];
            let cmdb_ci_display_value = item[3];
            let state = item[4];
            let start_date = item[5];
            let work_start = item[6];
            let work_end = item[7];

            let tableRow = "<tr>\n" +
                "                        <td> " + number + "</td>\n" +
                "                        <td> " + short_description + "</td>\n" +
                "                        <td> " + risk + "</td>\n" +
                "                        <td> " + cmdb_ci_display_value + "</td>\n" +
                "                        <td> " + state + "</td>\n" +
                "                        <td> " + start_date + "</td>\n" +
                "                        <td> " + work_start + "</td>\n" +
                "                        <td> " + work_end + "</td>\n" +
                "                        <td> " + 'FILL IN' + "</td>\n" +
                "                    </tr>";

            $('#table_tbody_id').append(tableRow);
        }

    }
});
}

和调用方法

getChangeTicketInformation();