Mercurial > kallithea
view kallithea/model/meta.py @ 8685:dff9658bdd98
model: don't import Session from db - import meta and get it from the real source
author | Mads Kiilerich <mads@kiilerich.com> |
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date | Mon, 12 Oct 2020 01:44:10 +0200 |
parents | a67bcc6f9118 |
children |
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# -*- coding: utf-8 -*- # 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 3 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, see <http://www.gnu.org/licenses/>. """ SQLAlchemy Metadata and Session object """ from beaker import cache from sqlalchemy.ext.declarative import declarative_base from sqlalchemy.orm import scoped_session, sessionmaker # Beaker CacheManager. A home base for cache configurations. cache_manager = cache.CacheManager() __all__ = ['Base', 'Session'] # # SQLAlchemy session manager. # session_factory = sessionmaker(expire_on_commit=True) Session = scoped_session(session_factory) # The base class for declarative schemas in db.py # Engine is injected when model.__init__.init_model() sets meta.Base.metadata.bind Base = declarative_base() # Define naming conventions for foreign keys, primary keys, indexes, # check constraints, and unique constraints, respectively. Base.metadata.naming_convention = { 'fk': 'fk_%(table_name)s_%(column_0_name)s', 'pk': 'pk_%(table_name)s', 'ix': 'ix_%(column_0_label)s', 'ck': 'ck_%(table_name)s_%(column_0_name)s', 'uq': 'uq_%(table_name)s_%(column_0_name)s', } # For custom CheckConstraints (not those autogenerated e.g. for Boolean # types), a name should be given explicitly, since "column_0" is here a # rather vague notion. A custom name is also necesarry if the generated # name is very long, since MySQL limits identifiers to 64 characters.