Develop Reference

datatable warning 4 - Requested unknown parameter '0' for row 0, column 0

I am working on datatable and facing this error :
DataTables warning: table id=table - Requested unknown parameter '0'
for row 0, column 0.
I have studied this link and it says that my table column defines in HTML doesn't match with the columns received from server. BUT in my case both are same.
Here is my HTML code :
<table id="table" class="display responsive nowrap" cellspacing="0" width="100%">
<thead style="background-color:#303641;">
<tr>
<th>aNumber</th>
<th>bNumber</th>
<th>cellID</th>
<th>dateTime</th>
<th>duration</th>
<th>imei</th>
<th>imsi</th>
<th>operatorId</th>
<th>mscId</th>
<th>fileId</th>
</tr>
</thead>
<tbody>
</tbody>
</table>
Datatable javascript code :
var dataTable = $('#table').DataTable({
"processing": true,
"serverSide": true,
"bFilter": false,
"iDisplayLength": configData,
dom: 'Bfrtip',
buttons: ['colvis', 'print', 'csv', 'excel', 'pdf'],
searching: false,
language: {
buttons: {
colvis: 'Show/Hide Columns'
}
},
"ajax": {
url: "getAdvanceCallAnalysisData.json",
data: function(d) {
return $.extend({}, d, {
"offset": 0,
"newRequest": newReq,
"totalRecords": total,
"lookInCol": "aNumber",
"lookInVal": "43543543",
"fromDate": from_date,
"toDate": to_date,
"callingCellId": "",
"CalledCellId": "",
"cdrType": "",
"smsType": "",
"durationFilter": "",
"selectColumns": "",
"sortCol": "",
"sortType": "",
});
},
type: "POST",
error: function() {
alert("error");
},
complete: function(data) {
total = data.responseJSON.recordsTotal;
newReq = 0;
test(total, newReq);
$("#loading_image").hide();
$(".show_datatable").show();
},
"aoColumns": [{
"mData": "aNumber"
}, {
"mData": "bNumber"
}, {
"mData": "cellID"
}, {
"mData": "dateTime"
}, {
"mData": "duration"
}, {
"mData": "imei"
}, {
"mData": "imsi"
}, {
"mData": "operatorId"
}, {
"mData": "mscId"
}, {
"mData": "fileId"
}]
}
});
you can see that my columns name and numbers match with the columns define in ajax response.
I have done same thing for another table and it was working fine but it shows error here. don't know why !!
json response : (It returns 15 records, I posted only two just to make it short)
{"msg":null,"code":null,"status":null,"data":[{"aNumber":"343","bNumber":"3434","cellID":"410-01-831-14770","dateTime":"2017-08-23 17:27:54.0","duration":419,"imei":"22380831696837","imsi":"35340311428389","operatorId":4,"mscId":"5","fileId":"4"},{"aNumber":"3434","bNumber":"5656","cellID":"410-07-1314-28271","dateTime":"2017-08-23 22:02:15.0","duration":785,"imei":"49776303943255","imsi":"35722667519554","operatorId":1,"mscId":"2","fileId":"5"}],"draw":1,"limit":1000,"recordsFiltered":12,"recordsTotal":12}
The most funny part is it shows the correct records and pagination even it display correct rows (with empty data) in datatable. This ajax call returns 15 records. Please see the image below :
Any idea, what is wrong here ?

Jquery Datatables ajax call won't run

I have following dataTables jquery in my js file
$("#manage_chauffeurs").dataTable({
"processing": true,
"bServerSide": true,
"aaSorting": [],
"ajax":{
'type': 'POST',
'url': '/admin/reports/chauffeurs_data'
},
"responsive": true,
"aoColumnDefs": [
{ 'bSortable': false, 'aTargets': [ 14 ] }
],
"columnDefs": [ { targets: '_all', visible: true } ],
"dom": '<"top"f>rt<"bottom"p><"clear">',
"aoColumns": [
{ "mDataProp": "name", "sDefaultContent": "", "sClass": "center_align"},
{ "mDataProp": "user_id", "sDefaultContent": "", "sClass": "center_align" }
]
});
Below is the html
<table class="display responsive no-wrap" id="manage_chauffeurs">
<thead>
<tr>
<th width="50%">User Name</th>
<th width="50%">User ID</th>
</tr>
</thead>
</table>
I have the resource '/admin/reports/chauffeurs_data' set at my server. However, I don't get an ajax call. No call at all.
Browser console gives the following error:
jquery.dataTables.js?body=1:4090 Uncaught TypeError: Cannot read property 'style' of undefined
Checked for above error, I have no mismatch of columns in my code.
What could be going wrong here?
Someone please help!

Json webservice values are not loading in datatables. Showing error of "TypeError: c is undefined"?

I am retrieving json values from java server and loading it in the datables.While parsing it shows the error of TypeError: c is undefined.
Html coding:
<table id="employeeTable" class="table table-striped table-hover dt-responsive" cellspacing="0" width="100%">
<thead>
<tr>
<th>Employee Id.</th>
<th >Division</th>
<th >Name</th>
<th >Mobile number</th>
</tr>
</thead>
</table>
JS Coding
$('#employeeTable').dataTable( {
"bProcessing": true,
"bStateSave": true,
"bServerSide": true,
"sAjaxSource": "http://192.168.1.3:8080/alpharithm/employee/employeeDetails",
"aoColumns": [
{ "sName": "division", "sTitle": "Employee Id.", "sWidth": "20%", "bSortable": "true" },
{ "sName": "employee_id", "sTitle": "Division", "sWidth": "40%", "bSortable": "true" },
{ "sName": "last_name", "sTitle": "Name", "sWidth": "40%", "bSortable": "true" },
{ "sName": "first_name", "sTitle": "Mobile number", "sWidth": "20%", "bSortable": "true" }
],
"sPaginationType": "full_numbers",
"aaSorting": [[1,'asc']],
"oLanguage": {
"sLengthMenu": "Page length: _MENU_",
"sSearch": "Filter:",
"sZeroRecords": "No matching records found"
},
});
JSON Response
{"employee_details":[{"division":"Android","employee_id":"EFF100568","last_name":"lastname","first_name":"name"}],"status":"1"}
Help me to solve this?

This kind of error often seems to be thrown by corrupted data... Could we see what your ajax source looks like ?
(Sorry this is not an answer but I can't post comments to ask more informations...)
Edit : Your source should looks like :
{
"data": [
["Android","EFF100568","lastname","name","1"],
["Android2","EFF100568","lastname","name","1"]
]
}

DataTable Error - Cannot read property 'length' of undefined

I am trying to build my DataTable (1.10.5) using an ajax call to a service - http://www.datatables.net/examples/ajax/
Here is my Javascript:
$('#tableexample').DataTable({
"dom": 'C<"clear">lfrtip',
"bProcessing": true,
"bServerSide": true,
"sAjaxSource": "../../api/EventTypes/GetAll",
"aoColumnDefs": [
{
"aTargets": [0],
"mData": "Id"
},
{
"aTargets": [1],
"mData": "Name"
},
{
"aTargets": [2],
"mData": "Name"
},
{
"aTargets": [3],
"mData": "Name"
},
{
"aTargets": [4],
"mData": "Name"
}
]
});
Here is my HTML:
<table id="tableexample" class="table table-striped dataTable table-hover">
<thead>
<tr>
<th>Select</th>
<th>Event</th>
<th>Primary Category</th>
<th>Secondary Category</th>
<th>Workflow</th>
</tr>
</thead>
</table>
Here is my error:
Uncaught TypeError: Cannot read property 'length' of undefined
If I look i my jquery.dataTables.js - it says that my data is undefined...
var data = _fnAjaxDataSrc( settings, json );
Can anyone help me out with setting up my ajax call properly to dynamically build my table??
Thanks!

Finally found it!
I needed to make an ajax call and pass the data to "aaData":
$.ajax({
url: '/Portal/api/EventTypes/GetEventWorkflowDefinitions',
type: 'GET',
dataType: 'json',
success: function (data) {
assignToEventsColumns(data);
}
});
function assignToEventsColumns(data) {
var table = $('#tableexample').dataTable({
"dom": 'C<"clear">lfrtip',
"bAutoWidth": false,
"aaData": data,
"aaSorting": [],
"aoColumnDefs": [
{
"aTargets": [0],
"bSearchable": false,
"bSortable": false,
"bSort": false,
"mData": "EventTypeId",
"mRender": function (event) {
return '<input class="childCheck" type="checkbox" id="childCheckBoxes" value="' + event + '">';
}
},
{
"aTargets": [1],
"mData": "EventType"
}
Once I did this...the table build perfectly!

DataTables Cannot read property 'length' of undefined

Below is the document ready function
Script type="text/javascript" charset="utf-8">
$(document).ready(function () {
$('#example').dataTable({
"bProcessing": true,
"bServerSide": true,
"sAjaxSource": "GetUser.ashx",
"sServerMethod": "POST",
"sAjaxDataProp" : "",
"aoColumnDefs": [ {
"aTargets": [ 0 ],
"mData": "download_link",
"mRender": function ( data, type, full ) {
return 'Detail';
}
} ],
"aoColumns": [
{ "mData": "LoginId" },
{ "mData": "Name" },
{ "mData": "CreatedDate" }
]
});
Below is the respond from server (GetUser.ashx)
[
{
"UserId": "1",
"LoginId": "white.smith",
"Activated": "Y",
"Name": "Test Account",
"LastName": "Liu",
"Email": "white.smith#logical.com",
"CreatedDate": "1/21/2014 12:03:00 PM",
"EntityState": "2",
"EntityKey": "System.Data.EntityKey"
},
More Data...
]
Below is the html table where the data should be put
<table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<thead>
<tr>
<th width="15%">User Detail</th>
<th width="15%">LoginID</th>
<th width="15%">Name</th>
<th width="15%">Created Date</th>
</tr>
</thead>
<tbody>
<tr>
<td colspan="5" class="dataTables_empty">Loading data from server</td>
</tr>
</tbody>
<tfoot>
<tr>
<th width="15%">User Detail</th>
<th width="15%">LoginID</th>
<th width="15%">Name</th>
<th width="15%">Created Date</th>
</tr>
</tfoot>
</table>
Expected result:
But I came across a problem:
While the page is loading, there was an uncaught exception from the browser:
Cannot read property 'length' of undefined
When I further check, it came from line 2037 of jquery.dataTables.js
var aData = _fnGetObjectDataFn( oSettings.sAjaxDataProp )( json );
I checked that the json was valid, but the "aData" was null, why this happen?

Your "sAjaxDataProp" : "" is set to an empty string, which causes this error.
dataTables expects to have a string here to tell under which key your server returned data can be found.
This defaults to aaData, so your json should include this key amongst all others that might be returned or needed by pagination etc.
Normal serversided json:
{
"iTotalRecords":"6",
"iTotalDisplayRecords":"6",
"aaData": [
[
"1",
"sameek",
"sam",
"sam",
"sameek#test.com",
"1",
""
],...
Since all values are in aaData you don't need sAjaxDataProp at all.
Modified serverside json:
{
"iTotalRecords":"6",
"iTotalDisplayRecords":"6",
"myData": [
[
"1",
"sameek",
"sam",
"sam",
"sameek#test.com",
"1",
""
],
Now the values are in myData. so you need to tell dataTables where to find the actual data by setting:
"sAjaxDataProp" : "myData"
Here is a Plunker

As there are 4 columns, add the following in "aoColumns":
"aoColumns": [
{ "mData": null }, // for User Detail
{ "mData": "LoginId" },
{ "mData": "Name" },
{ "mData": "CreatedDate" }
]
For undefined length, I have tried the following code and it's working:
$('#example').dataTable({
"aLengthMenu": [[100, 200, 300], [100, 200, 300]],
"iDisplayLength": 100,
"iDisplayStart" : 0,
"bProcessing": true,
"bServerSide": true,
"sAjaxSource": "GetUser.ashx",
"sServerMethod": "POST",
"sAjaxDataProp" : "",
"aoColumnDefs": [ {
"aTargets": [ 0 ],
"mData": "download_link",
"mRender": function ( data, type, full ) {
return 'Detail';
}
} ],
"aoColumns": [
{ "mData": null },
{ "mData": "LoginId" },
{ "mData": "Name" },
{ "mData": "CreatedDate" }
]
});
The reference site to know more about aLengthMenu is:
https://legacy.datatables.net/ref#aLengthMenu

If you see this error, look at the json returned from the server, and then make sure that all of your datatable 'mData' values have matching entry. If you are also using a bean, check there as well.
And there is no need specify 'tr', 'td', etc for the table. It is much cleaner if you let jquery do that for you. Here is what my tables look like:
<table cellpadding="0" cellspacing="0" border="0" class="display" id="myTable" style="table-layout:fixed" ></table>
and then my datatable elements specify the width and column title:
{sTitle: "Column A", sWidth: "100px", mData: "idStringFromJson", bSortable: false},

Use $('#example').DataTable({.. (capital D) instead of $('#example').dataTable({..

When I ran into this problem, it was actually the result of an un-applied migration. I had restored a backup of the database, which hadn't yet had one of my recent schema migrations run on it, and once I ran migrations, everything worked fine.