2 files changed, 32 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/type/serialized.rb b/activerecord/lib/active_record/type/serialized.rb
new file mode 100644
index 0000000000..cc7513ca2a
--- /dev/null
+++ b/activerecord/lib/active_record/type/serialized.rb
@@ -0,0 +1,28 @@
+module ActiveRecord
+  module Type
+    class Serialized < SimpleDelegator # :nodoc:
+      attr_reader :subtype
+
+      def initialize(subtype)
+        @subtype = subtype
+        super
+      end
+
+      def type_cast(value)
+        if value.respond_to?(:unserialized_value)
+          value.unserialized_value(super(value.value))
+        else
+          super
+        end
+      end
+
+      def serialized?
+        true
+      end
+
+      def accessor
+        ActiveRecord::Store::IndifferentHashAccessor
+      end
+    end
+  end
+end
diff --git a/activerecord/lib/active_record/type/value.rb b/activerecord/lib/active_record/type/value.rb
index 72d27197d5..a5493be8f2 100644
--- a/activerecord/lib/active_record/type/value.rb
+++ b/activerecord/lib/active_record/type/value.rb
@@ -43,6 +43,10 @@ module ActiveRecord
         false
       end
 
+      def serialized?
+        false
+      end
+
       def klass
         ::Object
       end