Source code for tldap.middleware

# Copyright 2012-2014 Brian May
#
# This file is part of python-tldap.
#
# python-tldap 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 3 of the License, or
# (at your option) any later version.
#
# python-tldap 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 python-tldap  If not, see <http://www.gnu.org/licenses/>.

import tldap.transaction


[docs]class TransactionMiddleware(object): """ Transaction middleware. If this is enabled, each view function will be run with commit_on_response activated - that way a save() doesn't do a direct commit, the commit is done when a successful response is created. If an exception happens, the database is rolled back. """
[docs] def process_request(self, request): """Enters transaction management""" if not tldap.transaction.is_managed(): tldap.transaction.enter_transaction_management()
[docs] def process_exception(self, request, exception): """Rolls back the database and leaves transaction management""" if tldap.transaction.is_dirty(): tldap.transaction.rollback()
[docs] def process_response(self, request, response): """Commits and leaves transaction management.""" if tldap.transaction.is_managed(): if tldap.transaction.is_dirty(): tldap.transaction.commit() tldap.transaction.leave_transaction_management() return response