self_included_hook

🛠️ Using self.included for Configuration

The self.included(base) hook lets a module configure the host class when included. This is useful for adding class methods, setting defaults, or injecting callbacks. Keep the setup logic contained and maintainable.

module Timestampable
  def self.included(base)
    base.extend ClassMethods
    base.before_save :set_timestamp
  end

  module ClassMethods
    def before_save(method)
      @callbacks ||= []
      @callbacks << method
    end
  end

  def set_timestamp
    self.updated_at = Time.now
  end
end

class Record
  include Timestampable
end