Possible Duplicate:
Multi Table Inheritance with rails 3
What is the best way to implement MTI in Rails? I don't want to go deep into it, I just want to use ready gem.
Possible Duplicate:
Multi Table Inheritance with rails 3
What is the best way to implement MTI in Rails? I don't want to go deep into it, I just want to use ready gem.
It's not a gem, but this blog entry is VERY straightforward and makes sense for 'simulating' MTI with ActiveRecord.
http://mediumexposure.com/multiple-table-inheritance-active-record/