Django 修改默认外键关联到其他字段

默认值关联

class Org(models.Model):
    """
    组织架构
    """

    name = models.CharField("组织机构名称", max_length=100, default='')
    pid = models.ForeignKey('self', verbose_name="上级", on_delete=models.CASCADE, related_name='parent_org',
                            blank=None, null=True, default=None)
    pids = ArrayField(models.CharField(max_length=32), default=None, null=True)
    oid = models.CharField("旧ID", max_length=100, null=True, blank=True, default='')

    class Meta:
        db_table = 'edu_org'
        verbose_name = verbose_name_plural = '组织架构表'

修改关联到其他字段

class Org(models.Model):
    """
    组织架构
    """

    name = models.CharField("组织机构名称", max_length=100, default='')
    pid = models.ForeignKey(on_delete=models.CASCADE, to_field='oid',
                                           related_name='org_code', db_column='prarent_id',
                                           to='self')
    pids = ArrayField(models.CharField(max_length=32), default=None, null=True)
    oid = models.CharField("旧ID", max_length=100, null=True, blank=True, default='')

    class Meta:
        db_table = 'edu_org'
        verbose_name = verbose_name_plural = '组织架构表'