During an ajax upload filename is getting from GET by the hardcoded key qqfile:
filename = request.GET['qqfile']
return HttpResponseBadRequest("AJAX request not valid")
Whereas it might be changed in a fileuploader instance (inputName option).
That's definitely possible - would you mind putting a PR together with the changes and docs?
I'm also doing a catch-up clean-out of issues on ajaxuploader. Given that this has been a year, it looks like this one's stalled, so I'm closing it. Please re-open if that's not right!