devise.rb

gistfile1.rb

module HectorFetch
  module InstanceMethods
    def service_with_fetch
      res = service_without_fetch
      logger.info("in with_fetch #{current_user}")
      current_user.update_from_hector
      res
    end
  end

  def self.included(base)

    base.class_eval do
      include InstanceMethods
      alias_method_chain :service, :fetch
    end
  end
end

Taxman::Application.config.after_initialize do

  class Devise::CasSessionsController

    include HectorFetch

  end

end