在Django中添加新的自定义权限

Question

我在我的Django模型中使用自定义权限,如下所示:

class T21Turma(models.Model):
    class Meta:
        permissions = (("can_view_boletim", "Can view boletim"),
                       ("can_view_mensalidades", "Can view mensalidades"),)

问题是,当我向列表添加权限auth_permission时,当我运行syncdb时,它不会被添加到表中.我究竟做错了什么.如果它有任何区别我在南方使用数据库迁移.

Answer 1

South不跟踪django.contrib.auth权限.有关更多信息,请参见#211票证.

票证上的一条评论表明,使用--allsyncdb上的选项可以解决问题.

Answer 2

如果您希望"manage.py migrate"执行所有操作(不调用syncdb --all).您需要使用迁移创建新权限:

user@host> manage.py datamigration myapp add_perm_foo --freeze=contenttypes --freeze=auth

编辑创建的文件:

class Migration(DataMigration):

    def forwards(self, orm):
        "Write your forwards methods here."
        ct, created = orm['contenttypes.ContentType'].objects.get_or_create(
            model='mymodel', app_label='myapp') # model must be lowercase!
        perm, created = orm['auth.permission'].objects.get_or_create(
            content_type=ct, codename='mymodel_foo', defaults=dict(name=u'Verbose Name'))

Answer 3

这对我有用:

./manage.py update_permissions

这是一个django扩展的事情.

Answer 4

您可以连接到post_migrate信号,以便在迁移后更新权限.我使用以下代码,稍微修改了Dev with Passion,最初来自django-extensions.

# Add to your project-level __init__.py

from south.signals import post_migrate

def update_permissions_after_migration(app,**kwargs):
    """
    Update app permission just after every migration.
    This is based on app django_extensions update_permissions management command.
    """
    from django.conf import settings
    from django.db.models import get_app, get_models
    from django.contrib.auth.management import create_permissions

    create_permissions(get_app(app), get_models(), 2 if settings.DEBUG else 0)

post_migrate.connect(update_permissions_after_migration)