Django在迁移中插入权限

Question

我需要在迁移中填充auth_group_permission表。我用以下代码创建了一个迁移：

# -*- coding: utf-8 -*-
# Generated by Django 1.11.5 on 2017-12-05 10:07
from __future__ import unicode_literals
from django.db import migrations
from django.contrib.auth.models import Group, Permission
from django.contrib.auth.management import create_permissions

def add_group_permissions(apps, schema_editor):
    for app_config in apps.get_app_configs():
        create_permissions(app_config, apps=apps, verbosity=0)

    #Workers
    group, created = Group.objects.get_or_create(name='Workers')   
    can_add_worker_task = Permission.objects.get(codename='add_worker_task')
    group.permissions.add(can_add_worker_task)
    group.save()

class Migration(migrations.Migration):
    dependencies = [
        ('crowdsourcing', '0005_add_view_permission'),
        ('auth', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(add_group_permissions),
    ]

但是，当我执行"python manage.py迁移“命令时，我收到了以下错误："django.contrib.auth.models.DoesNotExist:权限匹配查询不存在”。我认为问题在于"auth_permission“表仍然是空的。我能解决吗？

Answer 1

我已经用这个代码解决了：

def add_group_permissions(apps, schema_editor):
    for app_config in apps.get_app_configs():
       app_config.models_module = True
       create_permissions(app_config, apps=apps, verbosity=0)
       app_config.models_module = None