Javascript 如何将附加参数传递给 jQuery DataTable ajax 调用？
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How do I pass additional parameters to the jQuery DataTable ajax call?
提问by Brett
When loading a jQuery DataTable, I have the code shown below. How do I pass additional parameters to the AJAX call? The fnServerParams callback suggested in the questions and answers below does not work. That is, naively using aodata.push()results in "push is undefined" (because, indeed, aodata is not an array). So what's the correct way to do this?
加载 jQuery DataTable 时，我有如下所示的代码。如何将附加参数传递给 AJAX 调用？以下问题和答案中建议的 fnServerParams 回调不起作用。也就是说，天真地使用aodata.push()“push is undefined”中的结果（因为实际上，aodata 不是数组）。那么这样做的正确方法是什么？
Related questions:
相关问题：
Code:
代码：
self.dataTable = self.dataTableContainer.DataTable({
"autoWidth": false,
"bSort": false,
"displayStart": 0,
"paging": false,
"lengthChange": false,
"processing": true,
"serverSide": true,
"dom": "<'dataTables_header dashboard_alert_history__alertHeader'i>",
"ajax": {
url: getDataUri,
error: onError,
cache: false,
"fnDrawCallback": onTableDrawn,
},
"fnDrawCallback": onTableDrawn,
"language": {
"info": resources.alarmHistory,
"infoEmpty": resources.alarmHistory,
"infoFiltered": ''
},
"columns": [
{
"data": "timestamp",
"mRender": function (data) {
return IoTApp.Helpers.Dates.localizeDate(data, 'L LTS');
},
"name": "timestamp"
},
{
"data": "deviceId",
"mRender": function (data) {
return htmlEncode(data);
},
"name": "deviceId"
},
{
"data": "ruleOutput",
"mRender": function (data) {
return htmlEncode(data);
},
"name": "ruleOutput"
},
{
"data": "value",
"mRender": function (data) {
return htmlEncode(IoTApp.Helpers.Numbers.localizeFromInvariant(data));
},
"name": "value"
},
],
"columnDefs": [
{
"targets": [0, 1, 2, 3],
"className": 'table_alertHistory_issueType',
"width": "20%"
}
],
});
回答by Brett
I neglected to RTFM. The fnServerParamscallback is now legacyfor versions 1.9 and earlier. In the latest version of DataTables, you leverage the ajax data parameter as described in the DataTables documentation. In the example below, appending mykeyto the dobject will do the trick:
我忽略了 RTFM。该fnServerParams回调现在是传统的1.9和更早版本。在最新版本的 DataTables 中，您可以利用DataTables 文档中所述的 ajax 数据参数。在下面的示例中，附加mykey到d对象将起到作用：
$(document).ready(function() {
$('#example').DataTable( {
"processing": true,
"serverSide": true,
"ajax": {
"url": "scripts/server_processing.php",
"data": function ( d ) {
d.myKey = "myValue";
// d.custom = $('#myInput').val();
// etc
}
}
} );
} );
