A few slides about the migration from Rails 4 to Rails 5

Transcript

1. Rails 5 is here a few slides about the migration

   from Rails ~4
2. None

3. my slides are not about the features - you have

   to check them out on your own!

4. I need a TODO app for test

5. but let’s upgrade something more useful

6. None

7. https://github.com/ netguru/reminders

8. Gemfile gem "rails", "~> 4" gem "coffee-rails" gem "bootstrap-datepicker-rails" gem

   "decent_exposure" gem "draper" gem "jquery-rails", "4.0.4" # version 4.0.5 breaks jquery-datatables

9. UPDATING!

10. Step 1 - changing relevant gems gem "rails", "~> 4”

11. Step 1 - changing relevant gems gem "rails", "~> 4”

    gem "rails", "~> 5"

12. Step 1 - changing relevant gems bundle update rails

13. None
14. None

15. Step 2 - updating gems along the way bundle update

    rails railties

16. meh!

17. Step 2 - updating gems along the way bundle update

    rails railties sass-rails

18. nope!

19. Step 2 - updating gems along the way bundle update

    rails railties sass-rails coffee-rails slim-rails

20. still missing something!

21. Step 3 - strict dependencies gem "jquery-rails", "4.0.4" # version

    4.0.5 breaks jquery-datatables

22. Step 3 - strict dependencies gem "jquery-rails", "4.0.4" # version

    4.0.5 breaks jquery-datatables gem "jquery-rails"

23. Step 3 - strict dependencies gem "sass-rails", "~> 5.0" 


    gem "sass-rails"

24. Step 3 - strict dependencies bundle update rails railties sass-rails

    coffee-rails slim-rails jquery-rails
25. None

26. better, but still

27. let’s have a look again

28. None

29. https://github.com/ evrone/quiet_assets/pull/ 51

30. so we don’t need it anymore

31. Step 1 - changing relevant gems gem "quiet_assets"

32. Step 1 - changing relevant gems gem "quiet_assets" gem "quiet_assets"

33. Step 2 - updating gems along the way bundle update

    rails railties coffee- rails slim-rails

34. pretty good, we need to solve rspec-rails

35. Step 2 - updating gems along the way bundle update

    rails railties coffee- rails slim-rails rspec-rails
36. None

37. hahahha, you fool

38. zoom in

39. None

40. there should be puma here, right?

41. Step 1 - changing relevant gems gem "thin" gem "thin"

42. Step 2 - updating gems along the way bundle update

    rails railties coffee- rails slim-rails rspec-rails

43. yeah

44. step 1&2 done - our Gemfile is ok

45. Step 3 - draper /Users/adamo/.rbenv/versions/2.2.3/lib/ ruby/gems/2.2.0/gems/draper-2.1.0/lib/ draper.rb:5:in `require': cannot load

    such file -- active_model/serializers/ xml (LoadError)

46. It turns out, draper gem isn’t quite ready for Rails

    5

47. It turns out, draper gem isn’t quite ready for Rails

    5

48. I’ve used drape gem instead but you should follow https://github.com/drapergem/

    draper/pull/752

49. Step 3 - draper gem "draper" gem "draper"

50. Step 3 - draper bundle

51. drape is pretty much the same as draper but you

    have to change the namespace

52. let’s create base decorator (it should have been here before)

53. Step 3 - draper class BaseDecorator < Drape::Decorator; end class

    ProjectDecorator < BaseDecorator

54. awesome!

55. Step 4 - rollbar bundle update rollbar # 2.8.0 wasn’t

    good enough

56. push it!

57. None

58. webrick? it’s so <=Rails4

59. None

60. Step 4 - puma gem „puma" bundle

61. None

62. success!

63. Step 4 - rails:update bin/rake rails:update

64. keep going

65. Step 4 - rspec bundle update rspec-core

66. it turns out, you have to be strict this time

67. Step 4 - rspec gem "rspec-rails", "~> 3.5" bundle

68. yep!

69. Step 5 - decent_exposure /Users/adamo/code/reminders/app/ controllers/application_controller.rb: 2:in `<class:ApplicationController>': undefined method

    `decent_configuration' for ApplicationController:Clas

70. well, read the wiki https://github.com/hashrocket/ decent_exposure/wiki/Api-changes-in- version-3#undefined-method- decent_configuration

71. Step 5 - decent_exposure decent_configuration do
 strategy DecentExposure::StrongParametersStrategy
 end

72. Step 6 - rails-controller- testing 245 examples, 3 failures NoMethodError:

    assert_template has been extracted to a gem. To continue using it, add `gem 'rails-controller-testing'` to your Gemfile.

73. Step 6 - rails-controller- testing gem „rails-controller-testing" bundle

74. YES

75. Step 6 - rack-mini-profiler bundle update rack-mini-profiler

76. QL

77. it works:)

78. https://github.com/ netguru/reminders/pull/35

79. –no one ever “migration will be easy”

80. –me, now “but please do it”

81. t.hanks! adam nowak / @lubieniebieski 06/07/2016