sample_controller.rb

class MyController < ApplicationController
  class SomeWisperThing
    include Wisper::Publisher

    def execute
      publish :foo
    end
  end

  def create
    command = SomeWisperThing.new
    command.on(:foo) do
      # Here we're using an early return to stop
      # controller flow. We should not do this.
      return respond_with(@whatever)
    end
    command.execute
  end
end