old_contents: from django.db import models
  
  
  class OrgManager(models.Manager):
  
      def get_for_user(self, user):
          return self.get_query_set().filter(users=user)
  
  
  class ActiveOrgManager(OrgManager):
      """
      A more useful extension of the default manager which returns querysets
      including only active organizations
      """
  
      def get_query_set(self):
          return super(ActiveOrgManager,
                  self).get_query_set().filter(is_active=True)
  
new_contents: from django.db import models
  
  
  class OrgManager(models.Manager):
  
      def get_for_user(self, user):
          if hasattr(self, 'get_queryset'):
              return self.get_queryset().filter(users=user)
          else:
              # Deprecated method for older versions of Django
              return self.get_query_set().filter(users=user)
  
  
  class ActiveOrgManager(OrgManager):
      """
      A more useful extension of the default manager which returns querysets
      including only active organizations
      """
  
      def get_queryset(self):
          try:
              return super(ActiveOrgManager,
                      self).get_queryset().filter(is_active=True)
          except AttributeError:
              # Deprecated method for older versions of Django.
              return super(ActiveOrgManager,
                      self).get_query_set().filter(is_active=True)
      get_query_set = get_queryset
  
subject: Use get_queryset method by default