Add MongoMapper key_i18n support

config/environment.rb

@@ -50,18 +50,18 @@ VALID_LOCALES = ["en", "zh_tw"]
 MongoMapper.database = "r4-#{Rails.env}"  
 
 
-#class CouchFoo::Base
-#  
-#  def self.property_i18n(property_name, property_type)
-#    VALID_LOCALES.each do |locale|
-#       property "#{property_name.to_s}_#{locale}".to_sym, property_type
-#    end
-#    
-#    define_method( property_name ) do
-#      self.read_attribute("#{property_name.to_s}_#{I18n.locale}")
-#    end
-#  end
-#
-#end
+module MongoMapper::Document::ClassMethods
+  
+  def key_i18n(key, *options)
+    VALID_LOCALES.each do |locale|
+       key "#{key.to_s}_#{locale}".to_sym, *options
+    end
+    
+    define_method(key) do
+      self.send("#{key.to_s}_#{I18n.locale}")
+    end
+  end
+
+end