如何在Django项目中用初始数据填充auth.groups和auth.group_permissions表

背景

我正在使用PostgreSQL。

我想立即填充 auth.groups 和 auth.group_permissions 表,在我的项目第一次迁移后。

所以,在我按照我想要的方式设置好这些桌子后,我通过跑步来扔掉它们

python manage.py dumpdata auth.groups auth.group_permissions > core/fixtures/initial_data.json

生成的文件如下

[
  {
    "model": "auth.group",
    "pk": 1,
    "fields": {
      "name": "Admin",
      "permissions": [
        29,
        31,
        32,
        33,
        34,
        35,
        36
      ]
    }
  },
  {
    "model": "auth.group",
    "pk": 2,
    "fields": {
      "name": "Operators",
      "permissions": [
        42,
        43,
        44,
        39,
        40
      ]
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 12,
    "fields": {
      "group": 1,
      "permission": 32
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 13,
    "fields": {
      "group": 1,
      "permission": 33
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 14,
    "fields": {
      "group": 1,
      "permission": 34
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 15,
    "fields": {
      "group": 1,
      "permission": 35
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 16,
    "fields": {
      "group": 1,
      "permission": 36
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 17,
    "fields": {
      "group": 1,
      "permission": 29
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 18,
    "fields": {
      "group": 1,
      "permission": 31
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 19,
    "fields": {
      "group": 2,
      "permission": 39
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 20,
    "fields": {
      "group": 2,
      "permission": 40
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 21,
    "fields": {
      "group": 2,
      "permission": 42
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 22,
    "fields": {
      "group": 2,
      "permission": 43
    }
  },
  {
    "model": "auth.group_permissions",
    "pk": 23,
    "fields": {
      "group": 2,
      "permission": 44
    }
  }
]

问题是

为了尝试这个方法,我删除并重新创建了我的数据库,这样它就完全新鲜了,在第一个数据库之后 migrate 命令,我运行

python manage.py loaddata initial_data.json

这里我得到了错误

django.db.utils。完整性错误:安装夹具'/home/uname/Workspace/project/core/ftures/initial_data.json'时出现问题:

无法加载身份验证。Group_permissions(pk=12):重复的键值违反了唯一约束“auth_Group_permissions_Group_id_permission_id_0cd325b0_uniq” 详细信息:密钥(group_id,permission_id)=(1,32)已存在。

这让我很困惑。当这两个表此时完全为空时,它怎么能抛出重复的键呢?我如何让它用这些初始数据填充这两个表?

谢谢