我的buyer field
来自卖方模型与买方模型之间的关系如下:
class Buyer(models.Model):
name = models.CharField(max_length=200, blank=True)
description = models.CharField(max_length=200, blank=True)
class Sell(models.Model):
item = models.OneToOneField(Buy, related_name='sell', on_delete=models.CASCADE)
buyer = models.ForeignKey(**Buyer**, related_name='sell', on_delete=models.CASCADE)
但是现在,将其设置为“用户”模型,如下所示:
class Sell(models.Model):
item = models.OneToOneField(Buy, related_name='sell', on_delete=models.CASCADE)
buyer = models.ForeignKey(**User**, related_name='sell', on_delete=models.CASCADE)
当我转到Django admin时,它显示了User模型中的所有可用用户,但是如果我尝试保存,则会出现如下错误:
insert or update on table "dma_sell" violates foreign key constraint "dma_sell_buyer_id_4d165f92_fk_dma_buyer_id"
DETAIL: Key (buyer_id)=(13) is not present in table "dma_buyer".
我想知道我不应该对此进行更改,但是纠正此错误的最佳方法是什么?我真的需要将买方字段与用户模型联系起来!
谢谢!