1 files changed, 12 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/store.rb b/activerecord/lib/active_record/store.rb
index 542cb3187a..f5c7a9f034 100644
--- a/activerecord/lib/active_record/store.rb
+++ b/activerecord/lib/active_record/store.rb
@@ -1,3 +1,4 @@
+require 'active_support/concern'
 require 'active_support/core_ext/hash/indifferent_access'
 
 module ActiveRecord
@@ -33,9 +34,18 @@ module ActiveRecord
   #   class SuperUser < User
   #     store_accessor :settings, :privileges, :servants
   #   end
+  #
+  # The stored attribute names can be retrieved using +stored_attributes+.
+  #
+  #   User.stored_attributes[:settings] # [:color, :homepage]
   module Store
     extend ActiveSupport::Concern
 
+    included do
+      config_attribute :stored_attributes
+      self.stored_attributes = {}
+    end
+
     module ClassMethods
       def store(store_attribute, options = {})
         serialize store_attribute, IndifferentCoder.new(options[:coder])
@@ -55,6 +65,8 @@ module ActiveRecord
             send(store_attribute)[key]
           end
         end
+
+        self.stored_attributes[store_attribute] = keys.flatten
       end
     end