class Child(models.Model):
name = models.CharField(max_length=30)
class Meta:
db_table = 'child'
OneToOneField 可以直接把 child整张表存进 man 的 child 字段里
查询 man.child 就能查到 Child 表数据
class Man(models.Model):
child = models.OneToOneField(to=Child,on_delete=models.CASCADE)
class Meta:
db_table = 'man'