old_contents: from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  
  class Story(models.Model):
      url = models.URLField(_('URL'))
      title = models.CharField(_('Title'), max_length=64)
      excerpt = models.CharField(_('Excerpt'), max_length=64, null=True, blank=True)
      created_at = models.TimeField(_('Created at'), auto_now_add=True)
      is_unread = models.BooleanField(_('Is unread?'), default=True)
  
new_contents: from django.db import models
  from django.utils.translation import ugettext_lazy as _
  
  
  class Story(models.Model):
      url = models.URLField(_('URL'))
      title = models.CharField(_('Title'), max_length=64)
      excerpt = models.CharField(_('Excerpt'), max_length=64, null=True, blank=True)
      created_at = models.TimeField(_('Created at'), auto_now_add=True)
      is_unread = models.BooleanField(_('Is unread?'), default=True)
  
      class Meta:
          ordering = ['-created_at']
  
subject: Order stories by descending creation time