franckverrot/activevalidators — pull request #70 by zporter (2014-09-19 14:39:51+00:00)
Title: Add Regexp validator

The Regular Expression validator is used for ensuring validity of attributes that should be regular expressions. Common use-cases I've seen in the past include allowing redirect rules to be managed within an application.

[Source](http://viget.com/extend/seven-useful-activemodel-validators)