AJAX view adapted from django-progressbarupload

    Return the upload progress and total length values

def upload_progress(request):
    """
    AJAX view adapted from django-progressbarupload

    Return the upload progress and total length values
    """
    if 'X-Progress-ID' in request.GET:
        progress_id = request.GET['X-Progress-ID']
    elif 'X-Progress-ID' in request.META:
        progress_id = request.META['X-Progress-ID']
    if 'logfilename' in request.GET:
        logfilename = request.GET['logfilename']
    elif 'logfilename' in request.META:
        logfilename = request.META['logfilename']
    cache_key = "%s_%s" % (request.META['REMOTE_ADDR'], progress_id)
    data = cache.get(cache_key)
    if not data:
        data = cache.get(logfilename.replace(' ','_'))
    return HttpResponse(json.dumps(data))