Despite close reading of Matz's Ruby book and Agile Web Dev. w. Rails,
I can't figure out how to tackle the challenge of sharing validation
code across models with attributes in common.
In each of my models I'd like to validate the shared attributes with a
custom validator that includes Rails ActiveRecord::Validations class
methods and some of my own validations. My problem is 1) I don't know
how to pass attribute references to my special method and 2) (mundane)
I can't successfully call any ActiveRecord::Validations class methods
from within my custom method.
A bit of garbage here, I know, but any thoughts? Is this kind of
problem handled by use of certain gems?