Hiding methods

method_object.rb

module MethodObject

  def call(*args, &block)
    new(*args, &block).instance_eval { call }
  end

  def self.extended(cls)
    class << cls
      private :new
    end
  end

end

publishes_post.rb

class PublishesPost

  extend MethodObject

  private

  def initialize(post, user)
    # ...
  end

  def call
    # ...
  end

end

DCI huh? :)