DARPEngine

# Alembic ## How to run Here mostly you need is `./versions` folder ### 1. Autogennerate new revision ``` alembic revision --autogenerate -m 'Revision name' ``` It works like git. The command above compare your table classes from `suos.models.py` with tables in existing database. Please check your env to understand which database you are using. After that you can find new file in `./versions` folder. Here you can see two functions. 1) `def upgrade():` - this function contains commands for database to make it same as your classes from `suos.models.py`. It will be empty is database absolutley same as classes. 2) `def downgrade():` - this function contains commands for database to make it same as previous after using `upgrade` function. ### 2. Run new genwrated revision ``` alembic upgrade head ``` This command apply changes from `upgrade` function to database.