gitlabhq/db/migrate/20130218141344_convert_closed_to_state_in_milestone.rb

class ConvertClosedToStateInMilestone < ActiveRecord::Migration
  def up
    Milestone.transaction do
      Milestone.where(closed: false).update_all("state = 'opened'")
      Milestone.where(closed: false).update_all("state = 'active'")
    end
  end

  def down
    Milestone.transaction do
      Milestone.where(state: :closed).update_all("closed = 1")
    end
  end
end