class ValidationError < StandardError end module NotifyIfInvalid def self.included(base) base.extend ClassMethods end module ClassMethods def notify_if_invalid after_validation :check_if_invalid include InstanceMethods extend SingletonMethods end end module SingletonMethods end module InstanceMethods def check_if_invalid return if self.errors.empty? message = "#{self.class.to_s} #{self.errors.full_messages.to_sentence}: #{self.inspect}" error = ValidationError.new message HoptoadNotifier.notify error end end end ActiveRecord::Base.send(:include, NotifyIfInvalid)