@@ -0,0 +1,377 @@
+from playhouse.migrate import PostgresqlMigrator, migrate%0A%0Afrom redash.models import db%0Afrom redash import models%0A%0Aif __name__ == '__main__':%0A    db.connect_db()%0A    migrator = PostgresqlMigrator(db.database)%0A%0A    with db.database.transaction():%0A        migrate(%0A            migrator.add_column('dashboards', 'groups', models.Dashboard.groups)%0A        )%0A%0A    db.close_db(None)%0A

add migration file