Django and urls.py: How do I HttpResponseRedirect via a named url?

A more concise way to write that if statement would be if request.session.get('user'). has_key is deprecated nowadays, and .get() returns None (by default, changeable by passing a second parameter). So combining this with Soviut's reply:

from django.core.urlresolvers import reverse

def login(request): 
    if request.session.get('user'):
         return HttpResponseRedirect(reverse('my-named-url'))

The right answer from Django 1.3 onwards, where the redirect method implicitly does a reverse call, is:

from django.shortcuts import redirect

def login(request):
    if request.session.get('user'):
        return redirect('named_url')

You need to use the reverse() utils function.

from django.urls import reverse
# or Django < 2.0 : from django.core.urlresolvers import reverse

def myview(request):
    return HttpResponseRedirect(reverse('arch-summary', args=[1945]))

Where args satisfies all the arguments in your url's regular expression. You can also supply named args by passing a dictionary.