/usr/share/pyshared/schooltool/generations/evolve37.py is in python-schooltool 1:2.1.0-0ubuntu1.
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# SchoolTool - common information systems platform for school administration
# Copyright (c) 2011 Shuttleworth Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""
Upgrade SchoolTool to generation 37.
Move per-schoolyear levels to a single per-app container.
"""
from zope.app.generations.utility import findObjectsProviding
from zope.app.publication.zopepublication import ZopePublication
from zope.component import getUtility
from zope.component.hooks import getSite, setSite
from zope.intid.interfaces import IIntIds
from schooltool.app.interfaces import ISchoolToolApplication
from schooltool.level.level import LevelContainerContainer
from schooltool.schoolyear.interfaces import ISchoolYearContainer
LEVELS_APP_KEY = 'schooltool.level.level'
def guessMostRecentLevels(app):
container = app.get(LEVELS_APP_KEY)
if (container is None or
not isinstance(container, LevelContainerContainer)):
return None
levels = None
syc = ISchoolYearContainer(app, None)
int_ids = getUtility(IIntIds)
years = list(reversed(syc.sorted_schoolyears))
active_year = syc.getActiveSchoolYear()
if active_year is not None:
years = [active_year] + years
for year in years:
sy_id = str(int_ids.getId(year))
levels = container.get(sy_id, None)
if levels is not None:
return levels
return None
def evolve(context):
root = context.connection.root().get(ZopePublication.root_name, None)
old_site = getSite()
apps = findObjectsProviding(root, ISchoolToolApplication)
for app in apps:
setSite(app)
levels = guessMostRecentLevels(app)
del app[LEVELS_APP_KEY]
if levels is not None:
app[LEVELS_APP_KEY] = levels
setSite(old_site)
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