Multi-level Single Table Inheritance (STI) in Rails
This took me more than one attempt to get right, so I thought I'd blat it out in
a blog post in case anyone else has been struggling with it. In the end,
ruby
scaling an abstraction
The applicability of "long-tail" content applies beyond UGC
[http://en.wikipedia.org/wiki/User-generated_content], into applications and
programming languages themselves. 37signals [http://37signals.com] has pushed
the industries' thinking around building applications