Morning, I have a simple file upload form. It works exactly as expected without javascript. It *almost* works as expected when I convert it to an ajax form, with something like form.ajaxSubmit(options). My options contain a dataType definition, {'dataType' : 'json'}. I believe that this directly relates to the HTTP Accept header and lets my server know the type of data that I'm expecting to get back. If I don't select a file to upload and hit submit then the Accept header is populated correctly ("application/json, text/javascript, */*"). If I do select a file to upload and hit submit then the Accept header ignores my dataType and appears to default to the browser default (something like "text/html,application/xhtml+xml,application/ xml;q=0.9,*/*;q=0.8"). In practice, this means that although the file is uploaded correctly, I'm unable to determine the the type of response required from the server (in Rails I can't use respond_to to detect a request for a js response). I'm wondering whether this is by design or whether something's wrong here.
Does anyone have any thoughts? Cheers, Chris