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controller_concerns_adv

đŸ§© Advanced Controller Concerns for Cross‐Cutting Logic​

Extract complex before/after callbacks, parameter sanitization and shared utilities into concerns. Use included do and ClassMethods to inject actions, scopes, or filters at the class level, keeping controllers DRY and expressive.

# app/controllers/concerns/audit_trail.rb
module AuditTrail
  extend ActiveSupport::Concern

  included do
    before_action :record_audit
  end

  private

  def record_audit
    Audit.create!(user: current_user, path: request.fullpath)
  end

  module ClassMethods
    def skip_audit_for(*actions)
      skip_before_action :record_audit, only: actions
    end
  end
end

# app/controllers/posts_controller.rb
class PostsController < ApplicationController
  include AuditTrail
  skip_audit_for :index, :show
end