b105540141
sqlite doesn't like complex changes (alter table) to happen inside a transaction that has already done other things. And really, each migration should say "I'm done" and commit its changes. This is not the full story, but it's the core of it. Specifially the migration framework should probably do a rollback "just in case" after each migration.
50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
# GNU MediaGoblin -- federated, autonomous media hosting
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# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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from sqlalchemy import MetaData, Table, Column, Boolean
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from mediagoblin.db.sql.util import RegisterMigration
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MIGRATIONS = {}
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@RegisterMigration(1, MIGRATIONS)
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def ogg_to_webm_audio(db_conn):
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metadata = MetaData(bind=db_conn.bind)
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file_keynames = Table('core__file_keynames', metadata, autoload=True,
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autoload_with=db_conn.bind)
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db_conn.execute(
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file_keynames.update().where(file_keynames.c.name == 'ogg').
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values(name='webm_audio')
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)
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db_conn.commit()
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@RegisterMigration(2, MIGRATIONS)
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def add_wants_notification_column(db_conn):
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metadata = MetaData(bind=db_conn.bind)
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users = Table('core__users', metadata, autoload=True,
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autoload_with=db_conn.bind)
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col = Column('wants_comment_notification', Boolean,
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default=True, nullable=True)
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col.create(users, populate_defaults=True)
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db_conn.commit()
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