How to Explore a Large Rails Application

Rails Club 2015 talk by Nikolay Bienko

Transcript

1. How to Explore a Large Rails Application Nikolay Bienko, AT Consulting @bikolyarb bikolya@gmail.com
2. Plan UI Traversing & Domain knowledge Get the app up and running Estimate codebase Check out primary entities ApplicationController Follow main use cases POROs and pattern objects
3. UI Traversing & Domain knowledge Explore what is your app about Documentation Grasp domain knowledge
6. Get the app up and running Make tests green bin/setup rake --tasks routes.rb gemfile-verboser
11. gemfile-verboser
12. Estimate codebase rake stats wc -l app/models/**/*.rb | sort gem ‘rails-erd’ gem ‘railroady’
15. wc -l app/models/**/*.rb wc -l app/controllers/**/*.rb
16. gem ‘rails-erd’
17. gem ‘railroady’
18. Check out primary entities Entity-Relationship Diagrams schema.rb gem ‘annotate’
19. gem ‘annotate’
20. ApplicationController Callbacks Methods and helper methods Authentication
21. ApplicationController
22. Follow main use cases routes -> controller -> model -> view pry pry-byebug stack-trace Introspection methods ctags Integration testing gem ‘rails-footnotes’ gem ‘state_machine’ with graphs
24. gem ‘rails-footnotes’
25. gem ‘state_machine’ with graphs
26. POROs and pattern objects lib app/services app/decorators app/facades app/helpers
27. Summary UI Traversing & Domain knowledge Get the app up and running Estimate codebase Check out primary entities ApplicationController Follow main use cases POROs and pattern objects
30. Feedback is welcome Nikolay Bienko, AT Consulting @bikolyarb bikolya@gmail.com