Generic view 'redirect_to' that supports QUERY_STRING

from django.http import HttpResponseGone, HttpResponsePermanentRedirect,\
    HttpResponseRedirect

def redirect_to(request, url, permanent=True, **kwargs):
    if url is not None:
        klass = permanent and HttpResponsePermanentRedirect or HttpResponseRedirect
        url = url % kwargs

        if request.GET:
            url = '?'.join([url, request.META['QUERY_STRING']])

        return klass(url)
    
    return HttpResponseGone()