Voltron-Migrator is a tool for executing SQL migrations with Node. While it's part of the Voltron.io framework, it's also a stand-alone component. Voltron-Migrator is heavily modeled after voodootikigod's migrator; in fact, the project started as a fork of voodootikigod's code.

Voltron-Migrator has two main purposes: generate SQL migrations, and execute them. V-M allows both the application and reversion of migrations. Like Rails, it creates a schema_migrations table in your database to track which migrations have already been executed, and it prefixes generated migration files with a timestamp of 'YYYYMMDDHHMMSS'.

Migrations are written in SQL and do not use an abstraction layer.

Include Voltron.io or Voltron-Migration in your package.json file. If you have node_modules\.bin in your path, just execute migrate. You can provide database configuration in two ways:

1. via a configuration file that will be required. The config file must return an object with a database property, which itself exposes a hash of the following properties: name, host, port, type, user (optional), password (optional).

2. via explicit values on the command line. The following properties are required: name, host, port, type. User and password are optional.

V-M assumes that your migrations are included in .\migrations, but you can change that via a CLI argument.

Running migrate on its own will execute migrations in order in the specified source directory, skipping over migrations that have already been run. If you supply -r or --revert as an argument, the migrations were be rolled back, starting with the most recent migration and ignoring any migrations that haven't yet been applied.

Running migrate -g or migrate --generate <filename> will create two migration files of the specified filename: <filename>_up.sql and <filename>_down.sql. As you can expect, up files are run when migrations are executed, and down files are run when migrations are reverted.

Postgres is currently supported.

• Add test coverage
• Implement MySQL
• Allow reversion by datestamp

In order to run the tests, you'll need to setup a database for Postgres (migrator_test). See the config files in test/fixtures for details.

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