Single Table Inheritance

[eluser]ricklee[/eluser]
I did have ORM in mind actually when I was thinking about Single Table Inheritance (STI) in CI. What I want are difft models that subclass one parent model, but I want them all going to the same table.

In Rails, having the difft models means I can use difft validation filters, etc, while still mapping to the same table. Without using STI, they would have to go to difft tables.

I guess in CI (without ORM) it's not a big deal because you just make the database calls in each individual model and you can send the data wherever you want...