old_contents: from django.conf import settings
  from django.contrib.syndication.feeds import Feed
  from django.contrib.sites.models import Site
  from django.contrib import comments
  
  class LatestCommentFeed(Feed):
      """Feed of latest comments on the current site."""
  
      def title(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return u"%s comments" % self._site.name
  
      def link(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return "http://%s/" % (self._site.domain)
  
      def description(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return u"Latest comments on %s" % self._site.name
  
      def items(self):
          qs = comments.get_model().objects.filter(
              site__pk = settings.SITE_ID,
              is_public = True,
              is_removed = False,
          )
          if getattr(settings, 'COMMENTS_BANNED_USERS_GROUP', None):
              where = ['user_id NOT IN (SELECT user_id FROM auth_users_group WHERE group_id = %s)']
              params = [settings.COMMENTS_BANNED_USERS_GROUP]
              qs = qs.extra(where=where, params=params)
          return qs.order_by('-submit_date')[:40]
          
      def item_pubdate(self, item):
          return item.submit_date
  
new_contents: from django.conf import settings
  from django.contrib.syndication.feeds import Feed
  from django.contrib.sites.models import Site
  from django.contrib import comments
  
  class LatestCommentFeed(Feed):
      """Feed of latest comments on the current site."""
  
      def title(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return u"%s comments" % self._site.name
  
      def link(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return "http://%s/" % (self._site.domain)
  
      def description(self):
          if not hasattr(self, '_site'):
              self._site = Site.objects.get_current()
          return u"Latest comments on %s" % self._site.name
  
      def items(self):
          qs = comments.get_model().objects.filter(
              site__pk = settings.SITE_ID,
              is_public = True,
              is_removed = False,
          )
          if getattr(settings, 'COMMENTS_BANNED_USERS_GROUP', None):
              where = ['user_id NOT IN (SELECT user_id FROM auth_user_groups WHERE group_id = %s)']
              params = [settings.COMMENTS_BANNED_USERS_GROUP]
              qs = qs.extra(where=where, params=params)
          return qs.order_by('-submit_date')[:40]
          
      def item_pubdate(self, item):
          return item.submit_date
  
subject: Use correct m2m join table name in LatestCommentsFeed