HTML5 data attribute for sAjaxSource

Hi everybody,

I like to pass a data attribute as ajaxSource, because I'm using dynamic tables.
I tried something like

$('.datatable table').dataTable({
"sAjaxSource": "/api/" + $(this).data('source')
});

but I get the string unknown for $(this).data('source').
When I add

"fnInitComplete": function () {
console.log($(this).data('source'));
}

the attribute is shown correctly.

Do you have any idea how to solve this?


Thanks and regards,
bart