How can I use Django permissions without defining a content type or model?

Question

I\'d like to use a permissions based system to restrict certain actions within my Django application. These actions need not be related to a particular model (e.g. access to sec

Answer 1

Fix for Chewie's answer in Django 1.8, which as been requested in a few comments.

It says in the release notes:

The name field of django.contrib.contenttypes.models.ContentType has been removed by a migration and replaced by a property. That means it’s not possible to query or filter a ContentType by this field any longer.

So it's the 'name' in reference in ContentType that the uses not in GlobalPermissions.

When I fix it I get the following:

from django.db import models
from django.contrib.auth.models import Permission
from django.contrib.contenttypes.models import ContentType


class GlobalPermissionManager(models.Manager):
    def get_queryset(self):
        return super(GlobalPermissionManager, self).\
            get_queryset().filter(content_type__model='global_permission')


class GlobalPermission(Permission):
    """A global permission, not attached to a model"""

    objects = GlobalPermissionManager()

    class Meta:
        proxy = True
        verbose_name = "global_permission"

    def save(self, *args, **kwargs):
        ct, created = ContentType.objects.get_or_create(
            model=self._meta.verbose_name, app_label=self._meta.app_label,
        )
        self.content_type = ct
        super(GlobalPermission, self).save(*args)

The GlobalPermissionManager class is unchanged but included for completeness.