OneToOneFiled 放在哪张表？ - V2EX

OneToOneFiled 放在哪张表？ - V2EX

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Django REST Framework

这是一个创建于 2793 天前的主题，其中的信息可能已经有所发展或是发生改变。

有表 A 和表 B1-B5 这 5 张表都是 OneToOne 的关系，那么：

表 A 写 5 个 OneToOneField
B1-B5 各写一个 OneToOneFiled

请问哪种写法比较好？

2 条回复 2018-05-04 14:32:21 +08:00

1

dataGridView

2018-04-26 00:01:34 +08:00

```
class Person(models.Model):
name = models.CharField(max_length=20)

class PersonDetail(models.Model):
age = models.IntegerField(10)
email = models.EmailField()
　 person = models.OneToOneField(Person)
```
如果 B 表示细节的话，写在 B 里吧。（上述类比）

2

geeklian

2018-05-04 14:32:21 +08:00

如果除 A 表目，B 表目就用了，那就放在 B 表，反之，放在 A 表。
但如果有，那就便放在那表，然後在 on_delete 上置除的操作。

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