Django: Redirect after HttpResponse -

i generating report download in view , starting download after processing post data. means user sends form , download starts:

views.py

def export(request):     if request.method == 'post' , 'export_treat' in request.post:          form1 = transexport(request.post, instance= obj)         if form1.is_valid():             ...              ...             response=httpresponse(ds.xls,content_type="application/xls")             response['content-disposition'] = 'attachment; filename="report_behandlungen.xls"'             return response 

what need page refresh after download (or redirect). how can achieve this?

i in simple logic javascript:

user clicks link

/download_file_now/ 

and comes /file_downloaded/ download starts , after 3 seconds, redirect page via js

location.replace('/another_url/'); 

to detect if download ready not easy