how i can do this about django-ecommerce HOT 2 CLOSED

         user = models.OneToOneField(User, null=True, related_name='shop', blank=True, 
          on_delete=models.CASCADE)

  name = models.CharField(max_length=70, null=True, default='shop', )

  address = models.CharField(max_length=70, null=True)`

          user = models.OneToOneField(User, null=True, on_delete=models.CASCADE)

         name = models.CharField(max_length=100, null=True, default='customer')

          Phone = models.PositiveIntegerField(blank=True, null=True)`

           shop = models.ForeignKey(Shop, models.CASCADE, null=True, blank=True)
                    
            name = models.CharField(max_length=100, blank=True)
                
            Brand = models.CharField(max_length=200, blank=True)
                   
          description = models.TextField(null=True, blank=True)`

  customer = models.ForeignKey(Customer, models.CASCADE, null=True)
         
  product = models.ForeignKey(Product, models.CASCADE, null=True)
          
  quantity = models.CharField(max_length=30)
        
    date_created = models.DateTimeField(auto_now_add=True)