class Metacode < ActiveRecord::Base end class MetacodeAssetPathUpdate < ActiveRecord::Migration def change Metacode.first(50).each do |metacode| next unless metacode.icon.start_with?('/assets/icons/') metacode.icon = metacode.icon.sub(/^\/assets\/icons/, 'https://s3.amazonaws.com/metamaps-assets/metacodes') metacode.icon = metacode.icon.sub('blueprint_96px', 'blueprint/96px') metacode.icon = metacode.icon.sub('generics_96px', 'generics/96px') metacode.save end end end