I've tried both MongoDB+Mongoid and Postgresql+hstore as a way to do better inheritance than STI in ActiveRecord. Both have deficiencies: Mongo is not mature e

I've tried both MongoDB+Mongoid and Postgresql+hstore as a way to do better inheritance than STI in ActiveRecord. Both have deficiencies: Mongo is not mature enough for an old lag like me to trust (and is incompatible with some Rails extensions), and hstore had problems with key deletion and cannot do object references or indeed types other than strings.