Rails Engine :: modularize you app
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Rails Engine is a pre-packaged Ruby on Rails application that can be mounted within another Rails application to provide reusable functionality, it allows extracting common features into modules or gems that integrate with a Rails application using Railties, and some examples of Rails Engines include Devise for authentication and Rails Admin for administration.
Rails Engine :: modularize you app
- 1. Rails Engine An awesome tool to extend your rails application Muntasim Ahmed Platform Architect @ Tasawr Interactive https://github.com/railscash [email protected]
- 2. Agenda • Why Rails Engine • What is Rails Engine • How it works with Rails Core • Who are they • Where is your interest
- 3. Problems • Large application without reusable component • Slow testing ( if any :) ) • Larger app, messy
- 4. Solution • Find common functionalities • Extract them to module => Gems • Use railtie to tie with Rails App => Rails Engine
- 5. One Thing! Rails (version>=3.1) is just a “supercharged” engine http://edgeguides.rubyonrails.org/engines.html
- 6. Rails Engine ? • pre-packaged application • able to be run or mounted within another Rails application • can have its own models, views, controllers, generators and publicly served static files
- 8. Rails Engine has Image source: Railscasts.com
- 9. Rails Engine has Image source: Google
- 10. Rails Engine has Image source: Google
- 11. Rails Engine has Image source: Google
- 12. Rails engine walk-through • Create an engine • Implement requirements in app, lib etc. • Test • Mount to main app • Override where necessary • And done!
- 13. Rails engine walk-through Create rails plugin new awesome_engine --mountable Then generate mvc stuffs, test In App Gemfile gem "awesome_engine", path => "awesome_engine_path In App Route mount AwesomeEngine::Engine => "/awesome_engine_path", as => “awesome_engine"
- 14. Rails engine walk-through Hit localhost:3000/awesome_engine_path (mount point) It will hit engine's root path Welcome to awesome engine home!
- 15. Rails engine walk-through Routes: Use engine routes from main app using engine_name.route_name e.g. awesome_name.root_path
- 16. Rails engine walk-through Routes: Use main app routes from engine using main_app.route_name e.g. main_app.root_path
- 17. Who are they • Rails Admin • Devise • Blogit • Tolk • .....
- 18. References • http://railscasts.com/episodes/277-mountable-engines • http://www.slideshare.net/AndyMaleh/rails-engine-patterns • http://www.slideshare.net/mirrec/rails-engine-rubyslava • http://edgeguides.rubyonrails.org/engines.html • http://edgeapi.rubyonrails.org/classes/Rails/Engine.html • http://pivotallabs.com/users/shagemann/blog/articles/1994- migrating-rom-a-single-rails-app-to-a-suite-of-rails-engines Image source: Google, Railscasts and Dulal Khan
- 19. Thanks for your attention :)
- 20. ??? Question(s)