datatracker/permissions/backend.py
2010-11-02 15:33:23 +00:00

45 lines
1.2 KiB
Python

# permissions imports
import permissions.utils
class ObjectPermissionsBackend(object):
"""Django backend for object permissions. Needs Django 1.2.
Use it together with the default ModelBackend like so::
AUTHENTICATION_BACKENDS = (
'django.contrib.auth.backends.ModelBackend',
'permissions.backend.ObjectPermissionsBackend',
)
Then you can use it like:
user.has_perm("view", your_object)
"""
supports_object_permissions = True
supports_anonymous_user = True
def authenticate(self, username, password):
return None
def has_perm(self, user_obj, perm, obj=None):
"""Checks whether the passed user has passed permission for passed
object (obj).
This should be the primary method to check wether a user has a certain
permission.
Parameters
==========
perm
The permission's codename which should be checked.
user_obj
The user for which the permission should be checked.
obj
The object for which the permission should be checked.
"""
return permissions.utils.has_permission(obj, user_obj, perm)