Being able to have groups of validations, partial validations, or
validations that don't prevent saving an object are common needs w/
ActiveRecord. Last week I did an exhaustive search of the available
plugins, and I wasn't able to find anything that satisfactorily solved
all the problems. Either things were too verbose, too limiting, too
specific, or I just didn't like the API.
Enter validation_scopes. I wrote this plugin to solve my problems
while still being able to harness the full power of ActiveRecord
If you have interest in such a thing please give it a try. At less
than 50 lines, I think it's a sustainable approach that will port well
to Rails 3, but it's also very dense meta-programming, so I want to
get more people using it to shake out bugs around the edge cases.