[Django]-In a django web application, how do you give users their own subdomain?

You can use some custom middleware to intercept the request and get the subdomain from it. The following code will retrieve the subdomain and redirect to a view by reversing the named url.

Put it in a middleware.py file in your app.

Make sure you set up the middleware in your settings.py file.

Make sure you’ve named your view in urls.py

middleware.py

from django.http import HttpResponseRedirect
from django.core.urlresolvers import reverse
import re

subdomain_pattern = re.compile('(?P<subdomain>.*?)\..*?')

class SubdomainMiddleware(object):
    def process_request(self, request):
        match = subdomain_pattern.match(request.get_host())
        subdomain = match.group('subdomain')
        redirect_url = reverse('groups_detail', args=[subdomain])
        return HttpResponseRedirect(redirect_url)

urls.py

from django.conf.urls.defaults import *

urlpatterns = patterns('',
    url(r'^groups/(?P<name>.+)/$', 'groups.views.detail', {}, name='group_detail'),
)

Note: this code is untested.

Redirecting can alter the URL’s appearance. If you want to avoid this, simply call the associated view, capture its result, and return it in an HttpResponse().