obsolete: Rake-task to initialize localized fields with MongoId

migrations.rake

#
#  I had a model where the fields banner_title and banner_text was simple text-fields
# Then I added :localized => true to this fields and all specs pass because specs use new data.
# On my production-server the app crashed because of "nil-fields".
# 
# I figured out how to solve this by initializing the _translations for existing records.
# Feel free to use my example in your production-environment - but, sure, without any warranty.
#
# [email protected], August 8, 2012
#

namespace :migrations
  desc "Modify data between versions > August 8, 2012 "
  task :localize_banner_fields => :environment do
    Page.all.each do |page|
      page.versionless do |_page|
        _old_title = _page.banner_title_translations
        _old_text  = _page.banner_text_translations
        _new_title = _old_title
        _new_text  = _new_title
        unless _old_title.class == BSON::OrderedHash
          _new_title = { "en" => _old_title }
          puts "CONVERTING #{_old_title.inspect} TO #{_new_title.inspect}"
        end
        unless _old_text.class == BSON::OrderedHash
          _new_text = { "en" => _old_text }
          puts "CONVERTING #{_old_text.inspect} TO #{_new_text.inspect}"
        end
        _page.banner_title_translations = _new_title
        _page.banner_text_translations  = _new_text
        _page.save
      end
    end
  end
end