在迁移中添加django管理员权限:不存在权限匹配查询

Question

我想在手动编写的迁移中添加一些组并为其分配权限,但如果我在干净的DB上运行它,则只有在运行所有迁移后才会创建权限.

我找到了这张票:https: //code.djangoproject.com/ticket/23422但我不能在那里发表评论(我可能会在表达对GeoDjango文档的不满之后被禁止),所以我将分享对解决方案的改进在下面.

Answer 1

在django 1.10中,可以使用以下代码:

from django.contrib.auth.management import create_permissions

def migrate_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

Answer 2

Django <= 1.9

看到Django的另一个答案 1.10+

这就足够了create_permissions:

from django.contrib.auth.management import create_permissions

apps.models_module = True
create_permissions(apps, verbosity=0)
apps.models_module = None

整个迁移都是这样的

# coding:utf-8
from django.db import migrations
from django.contrib.auth.models import Permission, Group
from django.contrib.auth.management import create_permissions
from django.contrib.contenttypes.models import ContentType
from django.conf import settings

MODERATORS_PERMISSIONS = ['change_modelname', ]


def add_permissions(apps, schema_editor):
    apps.models_module = True
    create_permissions(apps, verbosity=0)
    apps.models_module = None

    moderators_group = Group.objects.get_or_create(
        name=settings.MODERATORS_GROUP)[0]
    for codename in MODERATORS_PERMISSIONS:
        permission = Permission.objects.get(codename=codename)
        moderators_group.permissions.add(permission)


class Migration(migrations.Migration):

    dependencies = [
        ('contenttypes', '0002_remove_content_type_name'),
        ('thisappname', '0001_initial'),
    ]

    operations = [
        migrations.RunPython(add_permissions),
    ]