lib/azeroth/decorator.rb in azeroth-0.4.0 vs lib/azeroth/decorator.rb in azeroth-0.5.0

@@ -45,15 +45,29 @@
     class << self
       # @api private
       #
       # All attributes exposed
       #
-      # @return [Array<Symbol>]
+      # @return [Hash<Symbol,Hash>]
       def attributes_map
-        @attributes_map ||= {}
+        @attributes_map ||= build_attributes_map
       end
 
       private
+
+      # @api private
+      # @private
+      #
+      # Initialize attributes to be exposed map
+      #
+      # When the class inherity from another
+      # decorator, the new class should expose the
+      # same attributes.
+      #
+      # @return [Hash<Symbol,Hash>]
+      def build_attributes_map
+        superclass.try(:attributes_map).dup || {}
+      end
 
       # @visibility public
       # @api public
       # @private
       #