[rtags] Allow to 'derive' rtags
Since some releases, rtags (structure underlying uicfg) have selector and may be
copied using something like:
new_rtags = deepcopy(original_rtags)
new_rtags.__module__ = __name__
new_rtags.__select__ = custom_selector
The problem is that starting from that, both rtags wil diverge and changes in
original_rtags won't be considered, while we usually want to set a few specific
rules only in new_rtags. To fix this problem, this cset introduces the notion of
"derivated/parent" rtag, eg:
new_rtags = original_rtags.derive(__name__, custom_selector)
Beside easier copying, when using the above method changes in original_rtags
which are not overriden by new_rtags will be considered since it only hold its
specific rules but look among its parent chain for non-found keys.
Along the way, flake8 unittest_rtags.
Closes #16164880
# copyright 2003-2011 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""some constants and classes to define schema permissions"""
from cubicweb.schema import RO_REL_PERMS, RO_ATTR_PERMS, \
PUB_SYSTEM_ENTITY_PERMS, PUB_SYSTEM_REL_PERMS, \
ERQLExpression, RRQLExpression
# permissions for "meta" entity type (readable by anyone, can only be
# added/deleted by managers)
META_ETYPE_PERMS = PUB_SYSTEM_ENTITY_PERMS # XXX deprecates
# permissions for "meta" relation type (readable by anyone, can only be
# added/deleted by managers)
META_RTYPE_PERMS = PUB_SYSTEM_REL_PERMS # XXX deprecates
# permissions for relation type that should only set by hooks using unsafe
# execute, readable by anyone
HOOKS_RTYPE_PERMS = RO_REL_PERMS # XXX deprecates
from logilab.common.modutils import LazyObject
from logilab.common.deprecation import deprecated
class MyLazyObject(LazyObject):
def _getobj(self):
try:
return super(MyLazyObject, self)._getobj()
except ImportError:
raise ImportError('In cubicweb 3.14, function %s has been moved to '
'cube localperms. Install it first.' % self.obj)
for name in ('xperm', 'xexpr', 'xrexpr', 'xorexpr', 'sexpr', 'restricted_sexpr',
'restricted_oexpr', 'oexpr', 'relxperm', 'relxexpr', '_perm'):
msg = '[3.14] import %s from cubes.localperms' % name
globals()[name] = deprecated(msg, name=name, doc='deprecated')(MyLazyObject('cubes.localperms', name))