Gregg Pollack
format_for_extensions
Karle Durante from Custom Ink dropped me an email about a gem they released recently called format_for_extensions. Karl was tired of hainvg to type out the same format_for validation in his Rails models every time he needed to validate email, or address, or phone number field. format_for_extentions not only gives you a few easy to use canned validations like validates_postal_code_for and validates_email_for, but also provides an easy way to abstract the configuration so you can add your own.
