Flask-DbMigrant

Flask extension for working with Alembic.

It can be used as an alternative for Flask-Migrate. It depends only on Flask and Alembic.

Installation

$ pip install Flask-DbMigrant

Usage

First create the dbmigrant object:

from flask_dbmigrant import DbMigrant
dbmigrant = DbMigrant()

Then initialize it using init_app method:

dbmigrant.init_app(app)  # app is your Flask app instance

The Flask app config should have CONFIG_MODULE and DB_MODULE keys.

CONFIG_MODULE is a name of the module from which DATABASE_URL is to be imported (DATABASE_URL is a connection string that tells what database to connect to).

DB_MODULE is a name of the module from which database models and metadata are to be imported.

Existing commands

• flask db init

  create a migration repository and configure the environment

• flask db migrate

  create a migration script

• flask db upgrade

  execute the script

License

Flask-DbMigrant was created by Rafal Padkowski. It is licensed under the terms of the MIT license.