1 files changed, 11 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/attribute_methods/serialization.rb b/activerecord/lib/active_record/attribute_methods/serialization.rb
index 3227464032..93e3ca8000 100644
--- a/activerecord/lib/active_record/attribute_methods/serialization.rb
+++ b/activerecord/lib/active_record/attribute_methods/serialization.rb
@@ -76,6 +76,7 @@ module ActiveRecord
       end
 
       class Attribute < Struct.new(:coder, :value, :state) # :nodoc:
+
         def unserialized_value(v = value)
           state == :serialized ? unserialize(v) : value
         end
@@ -164,6 +165,16 @@ module ActiveRecord
             super
           end
         end
+
+        def attributes_for_coder
+          attribute_names.each_with_object({}) do |name,attrs|
+            attrs[name] = if self.class.serialized_attributes.include?(name)
+                @attributes[name].serialized_value
+              else
+                read_attribute(name)
+            end
+          end
+        end
       end
     end
   end