old_contents: # -*- coding: utf-8 -*-
  from django.core.urlresolvers import reverse
  from django.db import models
  
  from entropy.base import (
      SlugMixin, TitleMixin, TextMixin, ModifiedMixin, CreatedMixin,
      AttributeMixin, EnabledMixin
  )
  from templates.mixins import TemplateMixin
  
  
  class Page(TitleMixin, SlugMixin, EnabledMixin, TextMixin, CreatedMixin,
             ModifiedMixin, AttributeMixin, TemplateMixin):
  
      # title
      # short_title
      # slug
      # enabled
      # text
      # created_at
      # created_by
      # modified_at
      # modified_by
      # attributes
  
      featured = models.BooleanField(default=False)
      published_at = models.DateField(null=True)
  
      def get_absolute_url(self):
          """
          Returns the absolute url for a single page instance
  
          """
  
          return reverse('pages_detail_page', args=(self.slug, ))
  
      @staticmethod
      def get_list_url():
          """
          Returns the absolute url for all page objects.
          This is a static method.
  
          """
  
          return reverse('pages_all_pages')
  
new_contents: # -*- coding: utf-8 -*-
  from django.core.urlresolvers import reverse
  from django.db import models
  
  from entropy.base import (
      SlugMixin, TitleMixin, TextMixin, ModifiedMixin, CreatedMixin, EnabledMixin
  )
  from templates.mixins import TemplateMixin
  
  
  class Page(TitleMixin, SlugMixin, EnabledMixin, TextMixin, CreatedMixin,
             ModifiedMixin, TemplateMixin):
  
      # title
      # short_title
      # slug
      # enabled
      # text
      # created_at
      # created_by
      # modified_at
      # modified_by
      # attributes
  
      featured = models.BooleanField(default=False)
      published_at = models.DateField(null=True)
  
      def get_absolute_url(self):
          """
          Returns the absolute url for a single page instance
  
          """
  
          return reverse('pages_detail_page', args=(self.slug, ))
  
      @staticmethod
      def get_list_url():
          """
          Returns the absolute url for all page objects.
          This is a static method.
  
          """
  
          return reverse('pages_all_pages')
  
subject: Remove AttributeMixin