engine/app/models/extensions/page/redirect.rb

module Extensions
  module Page
    module Redirect

      extend ActiveSupport::Concern

      included do

        field :redirect, :type => Boolean, :default => false

        field :redirect_url, :type => String

        validates_presence_of :redirect_url, :if => :redirect

        validates_format_of   :redirect_url, :with => Locomotive::Regexps::URL, :allow_blank => true

      end

    end
  end
end