UnitValidator

UnitValidator provides a rails model validator using ruby-units to detect valid units of measurement

Installation

Just add this to your Gemfile:

gem 'unit_validation'

and run

bundle install

Usage

Put something like this in your models:

validates :height, :unit => true
validates :count, :unit => {:allowed_types => :unitless}
validates :width, :unit => {:allowed_types => [:mass, :length]}