old_contents: from django.db import models
  
  class Question(models.Model):
    question_text = models.CharField(max_length=200)
    pub_date = models.DateTimeField('date published')
  
  class Choice(models.Model):
    question = models.ForeignKey(Question)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)
new_contents: import datetime
  
  from django.db import models
  from django.utils import timezone
  
  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)
  
  class Choice(models.Model):
    question = models.ForeignKey(Question)
    choice_text = models.CharField(max_length=200)
    votes = models.IntegerField(default=0)
  
    def __str__(self):
      return self.choice_text
subject: edit model for api