i18n database backend conflicting with globalize3

20101021132131_add_translations_table.rb

class AddTranslationsTable < I18n::Backend::Database::Migration
  def self.up
    create_table :translation_migrations do |t|
      t.string :version
    end
    
    create_table :translations do |t|
      t.string :locale
      t.string :key
      t.text   :value
      t.text   :interpolations
      t.boolean :is_proc, :default => false
    end
    
    add_index :translations, :key
  end

  def self.down
    remove_index :translations, :key
    drop_table :translations
    drop_table :translation_migrations
  end
end

i18n_database_backend.rb

module I18n
  module Backend
    class Database < ActiveRecord
      include Fallbacks
      include Cache
      
      def translate(locale, key, options = {})
        begin
          super
        rescue I18n::MissingTranslationData
          key_parts = key.to_s.split(".")
          if key_parts.size > 1
            translate(locale, (key_parts[0..-3] << key_parts[-1]).join("."), options)
          else
            raise(I18n::MissingTranslationData.new(locale, key, options))
          end
        end
      end
      
    end
  end
end

I18n::Backend::Database::Translation.class_eval do
  after_save :clear_cache
  
  def clear_cache
    I18n.cache_store.clear
  end
end

i18n_initializer.rb

I18n::Backend::Simple.send(:include, I18n::Backend::Fallbacks)
I18n.backend = I18n::Backend::Chain.new(I18n::Backend::Database.new, I18n::Backend::Simple.new)

lookup_store = :mem_cache_store
I18n.cache_store = ActiveSupport::Cache.lookup_store(lookup_store)
I18n.cache_namespace = Rails.env

module I18n
  def self.name_for_locale(locale)
    begin
      I18n.backend.translate locale, "meta.language_name"
    rescue I18n::MissingTranslationData
      locale.to_s
    end
  end
end