ep06_listing_07.rb

module Advertisements

 class OnPublishAdvertisement
   def call(command)
     repository = AdvertisementRepository::new
     repository.with_advertisement(command.advertisement_id) do |advertisement|
       advertisement.publish(command.author_id)
     end
   end
 end

 class OnChangeContent
   def call(command)
     repository = AdvertisementRepository::new
     repository.with_advertisement(command.advertisement_id) do |advertisement|
       advertisement.change_content(command.content, command.author_id)
     end
   end
 end

end