Warning
This document is for an old release of Galaxy. You can alternatively view this page in the latest release if it exists or view the top of the latest release's documentation.
Source code for galaxy.model.migrate.versions.0030_history_slug_column
"""
Migration script to add column for a history slug.
"""
import logging
from sqlalchemy import (
Column,
MetaData,
Table,
TEXT
)
from galaxy.model.migrate.versions.util import (
add_column,
add_index,
drop_column
)
log = logging.getLogger(__name__)
metadata = MetaData()
[docs]def upgrade(migrate_engine):
print(__doc__)
metadata.bind = migrate_engine
metadata.reflect()
History_table = Table("history", metadata, autoload=True)
c = Column("slug", TEXT)
add_column(c, History_table, metadata)
# Index needs to be added separately because MySQL cannot index a TEXT/BLOB
# column without specifying mysql_length
add_index('ix_history_slug', History_table, 'slug')
[docs]def downgrade(migrate_engine):
metadata.bind = migrate_engine
metadata.reflect()
drop_column('slug', 'history', metadata)