snipt/blogs/middleware.py

from annoying.functions import get_object_or_None
from django.contrib.auth.models import User
from django.http import HttpResponseRedirect
from django.shortcuts import get_object_or_404


class BlogMiddleware:
    def process_request(self, request):
        request.blog_user = None

        host = request.META.get('HTTP_HOST', '')
        host_s = host.replace('www.', '').split('.')

        if host != 'snipt.net' and \
                host != 'snipt.localhost' and \
                host != 'local.snipt.net':
            if len(host_s) > 2:
                if host_s[1] == 'snipt':

                    blog_user = ''.join(host_s[:-2])

                    if '-' in blog_user:
                        request.blog_user = \
                            get_object_or_None(User,
                                               username__iexact=blog_user)

                        if request.blog_user is None:
                            request.blog_user = \
                                get_object_or_404(User,
                                                  username__iexact=blog_user
                                                  .replace('-', '_'))
                    else:
                        request.blog_user = \
                            get_object_or_404(User, username__iexact=blog_user)

            if request.blog_user is None:
                pro_users = User.objects.filter(userprofile__is_pro=True)

                for pro_user in pro_users:
                    if pro_user.profile.blog_domain:
                        if host in pro_user.profile.blog_domain.split(' '):
                            request.blog_user = pro_user

                            if host != \
                                    pro_user.profile.get_primary_blog_domain():
                                return HttpResponseRedirect(
                                    'http://' +
                                    pro_user
                                    .profile
                                    .get_primary_blog_domain())