lib/mongo_mapper/extensions/hash.rb in mongo_mapper-0.13.1 vs lib/mongo_mapper/extensions/hash.rb in mongo_mapper-0.14.0.rc1

@@ -1,14 +1,26 @@
 # encoding: UTF-8
 module MongoMapper
   module Extensions
     module Hash
-      def from_mongo(value)
-        HashWithIndifferentAccess.new(value || {})
+      extend ActiveSupport::Concern
+
+      module ClassMethods
+        def from_mongo(value)
+          HashWithIndifferentAccess.new(value || {})
+        end
       end
+
+      def _mongo_mapper_deep_copy_
+        self.class.new.tap do |new_hash|
+          each do |key, value|
+            new_hash[key._mongo_mapper_deep_copy_] = value._mongo_mapper_deep_copy_
+          end
+        end
+      end
     end
   end
 end
 
 class Hash
-  extend MongoMapper::Extensions::Hash
+  include MongoMapper::Extensions::Hash
 end
\ No newline at end of file