sequelize-lazy-migrations

Migration generator & runner for sequelize

This package provide two tools:

• makemigration - tool for create new migrations
• runmigration - tool for apply created by first tool migrations

Install

npm install sequelize-lazy-migrations

Usage

• Init sequelize, with sequelize-cli, using sequelize init
• Create your models
• Create initial migration - run:

makemigration --name <migration name>

• Change models and run it again, model difference will be saved to the next migration

To preview new migration, without any changes, you can run:

makemigration --preview

makemigration tool creates _current.json file in migrations dir, that is used to calculate difference to the next migration. Do not remove it!

To create and then execute migration, use: makemigration --name <name> -x

Executing migrations

• There is simple command to perform all created migrations (from selected revision):

runmigration

• To select a revision, use --rev <x>
• If migration fails, you can continue, use --pos <x>
• To prevent execution next migrations, use --one

For more information, use makemigration --help, runmigration --help

TODO:

• Unit tests
• Migration action sorting procedure need some fixes. When many foreign keys in tables, there is a bug with action order. Now, please check it manually (--preview option)
• Need to check (and maybe fix) field types: BLOB, RANGE, ARRAY, GEOMETRY, GEOGRAPHY
• Downgrade is not supported, add it
• This module tested with postgresql (I use it with my projects). Test with mysql and sqlite.