Plays Well with Others: Building Mountable Apps

Transcript

1. Plays well with others Building Mountable Apps Patrick Peak @peakpg

2. About Me

3. A CMS Story 2.3 3.2 3.0 Engines Introduced 3.1 Get

   Awesomer

4. Agenda • What is an Engine? • Building an Engine • Providing Rails

   Configuration • Easy to Install • Asset Pipeline • Working with other Engines

5. What are Engines? Responsibilities: •  Business Domain •  Selling Stuff

   •  Managing Users •  Blogging App #2

6. Separation of Concerns Selling Stuff Managing Users Blogging Business Domain

   App #2

7. No more plugins

8. Think about upgrade costs

9. Duplication is the root of all evil.

10. Examples Popular Engines

11. E-commerce

12. Authentication

13. Admin Dashboards

14. Building an Engine

15. What the world needs… $ rails plugin new another --mountable

16. Gem with a Rails App inside Rails App Gem

17. Isolated Namespace

18. Add a Resource $ rails g resource Page name path

    content

19. ‘Typical’ Controller

20. Isolated Controller

21. Routing Engines own their Routes

22. Engine Routes Rails.application.routes.draw

23. Our Awesome UI

24. Mounting the Engine App Root

25. Route Helpers <%= main_app.root_url %> # => / <%= another.root_url

    %> # => /another <%= another.page_path(@page) %> # => /another/pages/1

26. Get Smarter

27. Inside the Engine

28. In your App

29. Department of Redundancy Department…

30. Migrations Sharing Structure across Projects

31. Namespaced Tables

32. From Gem to Project $ rake another:install:migrations • Copies all files

    from db/migrate into a project • Won’t overwrite • Retimestamps

33. After installing 2 1

34. Install the World $ rake railties:install:migrations

35. Configuratin’ Provide Reasonable Defaults

36. http://edgeguides.rubyonrails.org/configuring.html

37. Initializers

38. Routing Extensions

39. Middleware Stack

40. “Suggested” Generators

41. Start Fast Minimize Friction for new users

42. Write a Readme gem "another" $ bundle install $ rake

    another:install:migrations $ rake db:migrate mount Another::Engine => "/another"

43. Improve Installation gem "another” $ rail g another:install

44. Generators

45. Asset Pipeline Packaging the view

46. Before /public $ rake copy:assets

47. After Project gem "ckeditor_rails", "3.6.2.2"

48. Favorite Key

49. Working Together Playing well with other Engines

50. Coordinated Approach My Site BrowerCMS News Blog

51. Streamlined $ rails g cms:install bcms_news

52. Delegating

53. This could be easier ? Rails Admin

54. Authentication Who are you, really?

55. Authorization Are you allowed to do that?

56. I don’t care, just pick something…

57. Interoperability suffers Your App Restful Auth Devise current_user?

58. Need a Common Security API secures

59. Recap What I hope you learned

60. Engines are the Future

61. Reduce errors from duplication

62. When done right…

63. The End Thanks!

64. Attributions http://www.flickr.com/photos/rosenfeldmedia/4459977458/sizes/o/in/photostream/ https://www.ruby-toolbox.com/ http://www.flickr.com/photos/7571290@N05/440978769/sizes/m/in/photostream/ http://www.spreecommerce.com http://www.flickr.com/photos/verseguru/168920451/sizes/o/in/photostream/ http://www.flickr.com/photos/richardgiles/5284155911/sizes/o/in/photostream/ http://www.flickr.com/photos/museemccordmuseum/2918567169/sizes/o/in/photostream/ http://www.flickr.com/photos/whisperwolf/4487007569/