def _check_object_permission(user_obj, codename, obj):
try:
perm = get_full_permission_name(codename, obj)
# 文字列 permission を実体に変換（してみる）
perm_to_permission(perm)
# 指定されたパーミッションが存在するためチェックを行う
return user_obj.has_perm(perm, obj=obj)
except ObjectDoesNotExist:
# 指定されたパーミッションが存在しないため None を返す
return None
def has_perm(self, user_obj, perm, obj=None):
"""
Check if user have permission (of object) based on registered handlers.
It will raise ``ObjectDoesNotExist`` exception when the specified
string permission does not exist and
``PERMISSION_CHECK_PERMISSION_PRESENCE`` is ``True`` in ``settings``
module.
Parameters
----------
user_obj : django user model instance
A django user model instance which be checked
perm : string
`app_label.codename` formatted permission string
obj : None or django model instance
None or django model instance for object permission
Returns
-------
boolean
Whether the specified user have specified permission (of specified
object).
Raises
------
django.core.exceptions.ObjectDoesNotExist
If the specified string permission does not exist and
``PERMISSION_CHECK_PERMISSION_PRESENCE`` is ``True`` in ``settings``
module.
"""
if settings.PERMISSION_CHECK_PERMISSION_PRESENCE:
# get permission instance from string permission (perm)
# it raise ObjectDoesNotExists when the permission is not exists
try:
perm_to_permission(perm)
except AttributeError:
# Django 1.2 internally use wrong permission string thus ignore
pass
# get permission handlers fot this perm
cache_name = '_%s_cache' % perm
if hasattr(self, cache_name):
handlers = getattr(self, cache_name)
else:
handlers = [
h for h in registry.get_handlers()
if perm in h.get_supported_permissions()
]
setattr(self, cache_name, handlers)
for handler in handlers:
if handler.has_perm(user_obj, perm, obj=obj):
return True
return False
def has_perm(self, user_obj, perm, obj=None):
"""
Check if user have permission (of object) based on registered handlers.
It will raise ``ObjectDoesNotExist`` exception when the specified
string permission does not exist and
``PERMISSION_CHECK_PERMISSION_PRESENCE`` is ``True`` in ``settings``
module.
Parameters
----------
user_obj : django user model instance
A django user model instance which be checked
perm : string
`app_label.codename` formatted permission string
obj : None or django model instance
None or django model instance for object permission
Returns
-------
boolean
Wheter the specified user have specified permission (of specified
object).
Raises
------
django.core.exceptions.ObjectDoesNotExist
If the specified string permission does not exist and
``PERMISSION_CHECK_PERMISSION_PRESENCE`` is ``True`` in ``settings``
module.
"""
if settings.PERMISSION_CHECK_PERMISSION_PRESENCE:
# get permission instance from string permission (perm)
# it raise ObjectDoesNotExists when the permission is not exists
try:
perm_to_permission(perm)
except AttributeError:
# Django 1.2 internally use wrong permission string thus ignore
pass
# get permission handlers fot this perm
cache_name = '_%s_cache' % perm
if hasattr(self, cache_name):
handlers = getattr(self, cache_name)
else:
handlers = [h for h in registry.get_handlers()
if perm in h.get_supported_permissions()]
setattr(self, cache_name, handlers)
for handler in handlers:
if handler.has_perm(user_obj, perm, obj=obj):
return True
return False
def _has_perm_of_content_object(self, user_obj, perm, star):
"""
スター付加先のオブジェクトの公開状態をチェックし、内部公開であれば
ユーザーにその記事の閲覧権限があるかどうかによりスターの閲覧権限を
規定する
"""
try:
# 対象オブジェクトのパーミッションを取得
perm = get_full_permission_name(perm, star.content_object)
# 文字列 permission を実体に変換
perm_to_permission(perm)
# 指定されたパーミッションが存在するためチェックを行う
return user_obj.has_perm(perm, obj=star.content_object)
except ObjectDoesNotExist:
# 指定されたパーミッションが存在しない。
# Star自体に閲覧権限があるわけではないので、今場合は常にTrue
return True
