Saving user acquisition information

something.py

class OriginalRefererMiddleware(object):
    def process_request(self, request):
        referer = request.META.get("HTTP_REFERER")
        host = request.META.get("HTTP_HOST")
        path_info = request.META.get("PATH_INFO")
        user_agent = request.META.get("HTTP_USER_AGENT")
        server_name = request.META.get("SERVER_NAME")

        if not "ORIGINAL_HTTP_REFERER" in request.session.keys():
            request.session['ORIGINAL_HTTP_REFERER'] = referer

        if not 'ENTRY_PAGE' in request.session.keys():
            request.session['ENTRY_PAGE'] = (host or server_name) + path_info
            
            
def set_original_referer(user, request):
    user_profile = user.get_profile()
    user_profile.original_referer = request.session.get("ORIGINAL_HTTP_REFERER")
    user_profile.entry_page = request.session.get("ENTRY_PAGE")
    user_profile.save()
    
# then, on signup method, just call set_original_referrer