• app/cells -> small repeatable blocks within page
• app/controllers -> skinny controllers,
  • mostly control-flow only, but be reasonable, do not extract one liner to use case
  • DHH approach to put one action into controller
• app/forms -> Reform (form objects)
• app/helpers -> Rails helpers
• app/models -> skinny models
• app/policies
• app/presenters -> view objects
• app/queries -> query objects
• app/reflexes → https://docs.stimulusreflex.com/quickstart#hello-reflex-world
• app/services (interactors, mutations)
  • a bit controversial, looks like a workaround, but pretty popular
  • OrderService (bad) vs RefundOrder (good)
  • https://www.toptal.com/ruby-on-rails/rails-service-objects-tutorial
  • https://medium.com/the-falconry/skinny-models-skinny-controllers-fat-services-e04cfe2d6ae
  • trailblazer operations
  • https://github.com/cypriss/mutations
  • https://github.com/AaronLasseigne/active_interaction/issues
  • https://dry-rb.org/gems/dry-transaction/
• app/uploaders -> Carrierwave
• app/values -> value objects