A simple migration, which runs pure Postgres SQL files.

Drop <timestamp>_desc.sql files in db/migrations (and corresponding <timestamp>_desc_down.sql files if you want to be able to downgrade).

Gemfile:

require 'pg-migrator/tasks'

Then make sure that you either have a DATABASE_URL environment variable

ENV['DATABASE_URL'] = "postgres://user:passwd@host/db"

or if using sockets and default user

ENV['DATABASE_URL'] = "postgres:db"

OR define db:setup:

namespace :db do
  task :setup => :environment do
    @migrator = PG::Migrator.new :dbname => 'mydb'
  end
end 

PG::Migrator takes the same arguments as PGconn.

Then as usually:

rake db:reset # drops the "public" schema in your database (not the database it self or any other schemas)
rake db:migrate:up # runs all migrations in order
rake db:migrate:down # runs the down migration for the latest applied migration

Copyright (C) 2011 by Carl Hörberg

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