django-无味派:相关数据不保存

My models.py

我models.py

class Orders(models.Model):
    order_id = models.CharField(max_length=7, primary_key=True)
    users = models.ForeignKey(ProductUsers, on_delete=models.DO_NOTHING)
    address = models.ForeignKey(ProductUsersAddress, on_delete=models.DO_NOTHING)
    payment_method = models.CharField(default='COD', max_length=20, choices=PAYMENT_METHOD)

class OrderedProduct(models.Model):
    products = models.ForeignKey(Products, on_delete=models.DO_NOTHING)
    orders = models.ForeignKey(Orders, on_delete=models.CASCADE)
    quantity = models.IntegerField(default=0)
    price = models.DecimalField(default=0.00, max_digits=5, decimal_places=2, blank=False)
class Orders(models