Django return HttpResponseRedirect to an url with a parameter

Question

I have a situation in my project where i need to make a redirection of the user to an url containing a parameter, it is declared in the urls.py like:

url(r'^notamember/(?P<classname>\w+)/$', 
                           notamember,
                           name='notamember'),)

How can i put that parameter in the return HttpResponseRedirect? I tried like:

return HttpResponseRedirect('/classroom/notamember/classname')

anyway, this is foolish, i know, i cannot consider the classmane as a parameter. For clarity, my view.py is:

def leave_classroom(request,classname):
    theclass = Classroom.objects.get(classname = classname)
    u = Membership.objects.filter(classroom=theclass).get(member = request.user).delete()
    return HttpResponseRedirect('/classroom/notamember/theclass/')

How can i include the variable theclass in that url? Thanks a lot!

Answer 1

Try this:

return HttpResponseRedirect('/classroom/notamember/%s/' % classname)

EDIT:

This is surely better (Daniel Roseman's answer):

from django.core.urlresolvers import reverse

url = reverse('notamember', kwargs={'classname': classname})
return HttpResponseRedirect(url)