ATLRUG - Upgrading Rails (Isn't So Bad)

Full-length version of my lightning talk from Rails Girls 6/29/16. Given on 7/13/16 at the Atlanta Ruby Users Group.

Upgrading Rails gets a bad rap, but it doesn't have to be so daunting if we listen to our tools and remember that we're in control.

Transcript

1. Upgrading Rails (Isn’t So Bad) Megan Tiu Atlanta Ruby Users Group July 13, 2016
2. Hello there megandtiu megantiu megan@megantiu.com megantiu.com
3. RailsConf
4. Why upgrade?
5. Why upgrade? • Speed • Security • Fun! • Up-to-date apps are easier to maintain
6. When should I upgrade?
7. When should I upgrade? • The larger your app, the later you should wait ◦ Bug fix patches will follow shortly ◦ Not all dependencies will be ready for Rails 5 • Smaller apps with few dependencies will likely be ready
8. It’s not so scary
9. 0. Create a new branch
10. $ git checkout -b rails5
11. 1. Start with a clean test suite
12. 1. Start with a clean test suite • No deprecation warnings • All tests passing • As many gems up-to-date as possible
14. 2. Bundle update
15. gem ‘rails’, ~> ‘5.0.0’ # Gemfile
16. $ bundle update rails
17. 3. Don’t panic!
19. 4. Update the offending gem
21. gem ‘rspec-rails’, ~> ‘3.5.0.beta4’ # Gemfile
22. gem ‘rspec-rails’, ~> ‘3.5.0.beta4’ # Gemfile Must specify for pre-release versions (.rc, .beta)
23. $ bundle update rails rspec-rails
24. 5. We’re still not panicking
27. To GitHub!
28. gem ‘exception_notification’, github: ‘smartinez87/exception_notification’, branch: ‘rails5’ # Gemfile
29. $ bundle update rails rspec-rails exception_notification
30. 6. !!!
32. Time to commit!
33. 7. Make your tests pass
35. 8. Deprecation warnings, be gone!
36. Use these...
37. To achieve this!
38. 9. Celebrate!
40. Takeaways and tips: • Break dependency upgrades into chunks • Read your gems’ changelogs • Look up your deprecation warnings • Error messages are your friend • You are in control
41. You are in control
42. http://megantiu.com/blog/8/upgrading-rails- doesnt-have-to-be-painful
43. https://speakerdeck.com/derekprior/keep- rails-upgraded
44. Looking for opportunities! megandtiu megantiu megan@megantiu.com megantiu.com