Source code for rattail.db.util
# -*- coding: utf-8 -*-
################################################################################
#
# Rattail -- Retail Software Framework
# Copyright © 2010-2015 Lance Edgar
#
# This file is part of Rattail.
#
# Rattail is free software: you can redistribute it and/or modify it under the
# terms of the GNU Affero General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# Rattail 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 Affero General Public License for
# more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with Rattail. If not, see <http://www.gnu.org/licenses/>.
#
################################################################################
"""
Database Utilities
"""
from __future__ import unicode_literals
# TODO: Deprecate/remove these imports.
from alembic.util import obfuscate_url_pw
from rattail.db.config import engine_from_config, get_engines, get_default_engine, configure_session
[docs]def maxlen(attr):
"""
Return the maximum length for the given attribute.
"""
if len(attr.property.columns) == 1:
type_ = attr.property.columns[0].type
return getattr(type_, 'length', None)