import logging from sqlalchemy import * from alembic.migration import MigrationContext from alembic.operations import Operations from rhodecode.lib.dbmigrate.versions import _reset_base from rhodecode.model import meta, init_model_encryption log = logging.getLogger(__name__) def upgrade(migrate_engine): """ Upgrade operations go here. Don't create your own engine; bind migrate_engine to your metadata """ _reset_base(migrate_engine) from rhodecode.lib.dbmigrate.schema import db_4_20_0_0 as db init_model_encryption(db) context = MigrationContext.configure(migrate_engine.connect()) op = Operations(context) table = db.PullRequestReviewers.__table__ with op.batch_alter_table(table.name) as batch_op: new_column = Column('role', Unicode(255), nullable=True) batch_op.add_column(new_column) _fill_reviewers_role(db, op, meta.Session) def downgrade(migrate_engine): meta = MetaData() meta.bind = migrate_engine def fixups(models, _SESSION): pass def _fill_reviewers_role(models, op, session): params = {'role': 'reviewer'} query = text( 'UPDATE pull_request_reviewers SET role = :role' ).bindparams(**params) op.execute(query) session().commit()