django multiple domains, single app

Question

I am trying to set my Django app work with multiple domains (while serving slightly different content) I wrote this middleware:

class MultiSiteMiddleware(object):
    def process_request(self, request):
        host = request.get_host()
        host_part = host.split(':')[0].split('.com')[0].split('.')
        host = host_part[len(host_part)-1] + '.com'
        site = Site.objects.get(domain=host)
        settings.SITE_ID = site.id
        settings.CURRENT_HOST = host
        Site.objects.clear_cache()
        return

In views I use this:

def get_site(request):
    current_site = get_current_site(request)
    return current_site.name

def view(request, pk):
    site = get_site(request)

    if site == 'site1':
        # serve content1
        ...
    elif site == 'site2'
        # serve content2
        ...

But now there are 404 errors (I sometimes find them in logs, don't see them while browsing my site manually) where they aren't supposed to be, like my site sometimes is serving content for wrong domains, can they happen because of some flaw in the above middleware and view code or I should look somewhere else?

Answer 1

I had a similar requirement and decided not to use the django sites framework. My middleware looks like

class MultiSiteMiddleware(object):

    def process_request(self, request):
        try:
            domain = request.get_host().split(":")[0]
            request.site = Site.objects.get(domain=domain)
        except Site.DoesNotExist:
            return http.HttpResponseNotFound()

then my views have access to request.site

If you're seeing 404's for sites that aren't yours in your logs it would seem like somebody has pointed their domain at your servers IP address, you could use apache/nginx to filter these out before they hit your app, but your middleware should catch them (though possibly by raising an uncaught 500 error instead of a 404)