Problem with ColVis

wengole

Hi,

I'm trying to make use of ColVis to allow the user to hide/show columns, however it's generating a JS error whenever I deselect a column. I'm almost certain this is something I'm doing wrong, as for a start I have quite a complicated sDom setting.

The error I get is:
[code]
Uncaught TypeError: Cannot call method 'substring' of null 192.168.2.112/calls/list/#:474
$.dataTable.fnRowCallback 192.168.2.112/calls/list/#:474
L 192.168.2.112/static/js/dataTables/dataTables_1.9.0.js:98
H 192.168.2.112/static/js/dataTables/dataTables_1.9.0.js:38
Ra 192.168.2.112/static/js/dataTables/dataTables_1.9.0.js:49
b 192.168.2.112/static/js/dataTables/dataTables_1.9.0.js:46
m.defaults.fnServerData.o.jqXHR.i.ajax.success 192.168.2.112/static/js/dataTables/dataTables_1.9.0.js:132
f.Callbacks.n 192.168.2.112/static/js/jquery-min.js:2
f.Callbacks.o.fireWith 192.168.2.112/static/js/jquery-min.js:2
w 192.168.2.112/static/js/jquery-min.js:4
f.support.ajax.f.ajaxTransport.send.d 192.168.2.112/static/js/jquery-min.js:4
[/code]

I've also made use of the superb DataTables Debugger: http://debug.datatables.net/iqoned

Any pointers will be greatly appreciated.

allan

Hi,

Thanks very much for providing the debug trace - really helpful!

I suspect that the issue is in your fnRowCallback function here:

[code]
var recording = $('td:nth-child(13)', nRow).html();
if(recording != ''){
var visibleText = recording.substring(0,25);
[/code]

If you remove a column with ColVis is there still 13 or more columns in the table (baring in mind that DataTables will remove from the DOM columns which aren't visible)? I'm going to guess not. I think what you might want to do is use the data (second parameter into fnRowCallback) rather than querying the DOM.

Allan

wengole

Hi Allan,

Yes that was the problem. Thanks again for your excellent support. I have another issue, but I'll open another discussion for that.