metamaps--metamaps/db/migrate/20160120061513_metacode_asset_path_update.rb

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