class BioMarkdownSupport < ActiveRecord::Migration[4.2] def up rename_column :users, :bio, :bio_raw add_column :users, :bio_cooked, :text, null: true User.where("bio_raw is NOT NULL").each do |u| u.send(:cook) u.save end end def down rename_column :users, :bio_raw, :bio remove_column :users, :bio_cooked end end