another_option.rb

module Wisper::EnlightenedPublisher
  extend ActiveSupport::Concern
  
  included do
    include Wisper::Publisher
    prepend PrependedMethods
  end
  
  def subscribe_to_listeners
    self.class.wisper_listeners.each do |listener|
      subscribe(listener.constantize.new)
    end
  end
  
  module PrependedMethods
    def initialize(*args, &block) # ack what is the right signature here, I don't even know.
      super
      subscribe_to_listeners
    end
  end
  
  module ClassMethods
    def subscriber(klass)
      wisper_subscriptions << klass
    end
  
    def wisper_subscriptions
      @wisper_subscriptions ||= []
    end
  end
end

class MyInteraction
  include Wisper::EnlightenedPublisher
  subscriber "AnalyticsListener"
  
  def initialize(user)
    @user = user
  end
  
  def run
    broadcast :something
  end
end

def initialize(*)

You can do something similar with MyInteraction.subscribe(AnalyticsListener.new), see here. It will subscribe the analytics listener to every instance of MyInteraction, it is also thread safe 😄

https://gist.github.com/dbalatero/7f35f59938d2fbd70e65#file-another_option-rb-L16 is correct for me.