powerdns-admin/db_downgrade.py

#!/usr/bin/env python3
from migrate.versioning import api
from config import SQLALCHEMY_DATABASE_URI
from config import SQLALCHEMY_MIGRATE_REPO
v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
api.downgrade(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO, v - 1)
v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
print('Current database version: ' + str(v))
Adjustment to work with Python3 2018-03-30 06:49:35 +00:00			`#!/usr/bin/env python3`
Initial commit 2015-12-13 09:34:12 +00:00			`from migrate.versioning import api`
			`from config import SQLALCHEMY_DATABASE_URI`
			`from config import SQLALCHEMY_MIGRATE_REPO`
			`v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)`
			`api.downgrade(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO, v - 1)`
			`v = api.db_version(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)`
			`print('Current database version: ' + str(v))`