localized_field.rb in mongoid_i18n-0.4.0

- old
+ new
@@ -1,6 +1,49 @@
 module Mongoid
   module I18n
-    class LocalizedField < Hash
+    class LocalizedField
+      include Mongoid::Fields::Serializable
+
+      # Return translated values of field, accoring to current locale.
+      # If :use_default_if_empty is set, then in case when there no
+      # translation available for current locale, if will try to
+      # get translation for defalt_locale.
+      def deserialize(object)
+        lookups = [self.locale]
+
+        # TODO: Add I18n.fallbacks support instead of :use_default_if_empty
+        if options[:use_default_if_empty]
+          lookups.push ::I18n.default_locale.to_s
+        end
+
+        # Find first localized value in lookup path and return corresponding value
+        object[lookups.find{|locale| object[locale]}]
+      end
+
+      # Return translations as keys. If :clear_empty_values is set to true
+      # pairs with empty values will be rejected
+      def to_hash(object)
+        if options[:clear_empty_values]
+          object.reject!{|k,v| v.blank?}
+        end
+
+        object
+      end
+
+      # Assing new translation to translation table.
+      def assign(object, value)
+        object.merge(locale => value)
+      end
+
+      # Replace translation hash with new one. If :clear_empty_values is set to
+      # pairs with empty values will be reject
+      def replace(object, values)
+        self.to_hash(values)
+      end
+
+      # Return current locale as string
+      def locale
+        ::I18n.locale.to_s
+      end
     end
   end
 end
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