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Source code for galaxy.model.migrate.versions.0057_request_notify

"""
Migration script to modify the 'notify' field in the 'request' table from a boolean
to a JSONType
"""

import logging
from json import dumps

from sqlalchemy import (
    Boolean,
    Column,
    MetaData,
    Table
)

from galaxy.model.custom_types import JSONType
from galaxy.model.migrate.versions.util import (
    add_column,
    drop_column,
)

log = logging.getLogger(__name__)
metadata = MetaData()


[docs]def upgrade(migrate_engine): print(__doc__) metadata.bind = migrate_engine metadata.reflect() Request_table = Table("request", metadata, autoload=True) # create the column again as JSONType col = Column("notification", JSONType) add_column(col, Request_table, metadata) cmd = "SELECT id, user_id, notify FROM request" result = migrate_engine.execute(cmd) for r in result: id = int(r[0]) notify_new = dict(email=[], sample_states=[], body='', subject='') cmd = "UPDATE request SET notification='%s' WHERE id=%i" % (dumps(notify_new), id) migrate_engine.execute(cmd) # SQLAlchemy Migrate has a bug when dropping a boolean column in SQLite if migrate_engine.name != 'sqlite': drop_column('notify', Request_table)
[docs]def downgrade(migrate_engine): metadata.bind = migrate_engine metadata.reflect() Request_table = Table("request", metadata, autoload=True) if migrate_engine.name != 'sqlite': c = Column("notify", Boolean, default=False) add_column(c, Request_table, metadata) drop_column('notification', Request_table)