app/models/video_policy.rb

   1 class VideoPolicy < ActiveRecord::Base
   2   validates_presence_of :day
   3   validates_presence_of :fee
   4   validates_presence_of :period
   5   validates_presence_of :description
   6
   7   validates_numericality_of :day
   8   validates_numericality_of :fee
   9   validates_numericality_of :period
  10
  11   protected
  12   def validate
  13     errors.add(:fee, "must be greater than $0.01") if fee < 0.01
  14   end
  15 end