concern_dependency_injection

🧩 Leverage ActiveSupport::Concern for Modular Dependencies

ActiveSupport::Concern simplifies module inclusion by managing dependencies and callbacks. Use included blocks to inject behaviour and ensure load order. This allows you to break large services into composable concerns without manual super calls.

module Auditable
  extend ActiveSupport::Concern

  included do
    before_save :record_changes
  end

  class_methods do
    def audit_strategy(strategy)
      cattr_accessor :strategy
      self.strategy = strategy
    end
  end

  private

  def record_changes
    strategy.log(self.changes)
  end
end

class Order
  include Auditable
  audit_strategy(MyCustomAuditor)
end