gistfile1.txt

namespace :db do
  desc "Rolls the schema back to the previous version. Specify the number of steps with STEP=n"
  task :rollback => :environment do
    step = ENV['STEP'] ? ENV['STEP'].to_i : 1
    version = ActiveRecord::Migrator.current_version - step
    ActiveRecord::Migrator.migrate('db/migrate/', version)
  end
end