JOSF

class Product(models.Model):	created = models.DateTimeField('date published')		def __str__(self):		return self.created		def was_published_today(self):		return self.pub_date.date() == datetime.date.today()		class Admin:		list_display = ('created', 'was_published_today')		date_hierarchy = 'created'		pass	class Seen(models.Model):	product = models.ForeignKey(Product, edit_inline=models.STACKED)	typeof = models.CharField(maxlength=32, core=True)	time = models.CharField(maxlength=32, core=True)	when = models.CharField(maxlength=32, core=True)class Remark(models.Model):	seen = models.ForeignKey(Seen, edit_inline=models.STACKED)	language = models.CharField(maxlength=5, core=True)	text = models.TextField(core=True)