f = open('/tmp/current.log', 'r')
dt = File(f)
response = HttpResponse(dt.read(), mimetype='text/plain')
response['Content-Disposition'] = 'attachment; filename=system.log'
return response

filename = '/tmp/current.log'
wrapper = FileWrapper(file(filename))
response = HttpResponse(wrapper, content_type='text/plain')
response['Content-Disposition'] = 'attachment; filename=system.log'
response['Content-Length'] = os.path.getsize(filename)
return response