class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')
    def __str__(self):
    	return self.question_text
    def was_published_recently(self):
    	return self.pub_date >= timezone.now() - datetime.timedelta(days=1)
    was_published_recently.admin_order_field = 'pub date'
    was_published_recently.boolean = True
    was_published_recently.short_description = 'Published recently?'