CakePHP newbie question: How to add non-database attribute to model?

Question

I want to create a model that has SOME attributes that are not stored in a database. For example, I want to maintain an "age" field in the model, but I only store birthday information in the database (I can calculate "age" once the DOB info has been loaded). I tried adding a simple attribute to a model extension, but as far as I can tell, it's ignored by CakePHP. What's the proper way to go about accomplishing this?

I'm a CakePHP novice, so forgive me if I'm missing something obvious.

Answer 1

I'd do it using the afterFind callback method in the model.