new_contents: # -*- coding: utf-8 -*-
  
  from __future__ import unicode_literals
  
  from django.db import models
  
  
  class Checkout(models.Model):
      # payment_id = models.BigIntegerField(null=True)
      checkout_preferences = models.TextField()
      checkout_response = models.TextField()
      creation_timestamp = models.DateTimeField(auto_now_add=True)
      last_update_timestamp = models.DateTimeField(auto_now=True)
  
subject: Add idea for model