class AddCreationDataToPatchVersion < ActiveRecord::Migration
  def self.up
    add_column :patch_versions, :created_at, :datetime
    add_column :patch_versions, :created_by, :string, :limit => 20
    add_column :patch_versions, :updated_at, :datetime
    add_column :patch_versions, :updated_by, :string, :limit => 20
  end

  def self.down
    remove_column :patch_versions, :created_at
    remove_column :patch_versions, :created_by
    remove_column :patch_versions, :updated_at
    remove_column :patch_versions, :updated_by
  end
end