Off the Rails: Patterns for fixing fat models, out-of-controllers, and other Rails problems

Transcript

1. Off the Rails Patterns for fixing fat models, out-of-controllers, and other Rails problems
2. What I’m about to tell you is wrong.
3. YMMV
4. MVC
5. View Controller Model
6. 3 Tier Architecture
7. Business Logic Presentation Data
8. Business Logic Presentation Data
9. Business Logic Presentation Data View Controller Model
10. Business Logic Presentation Data View Controller Model
11. View Controller Model Business Logic Presentation Data
15. View Controller Model
16. Model Service View Controller
17. Business Logic Presentation Data
18. Business Logic Presentation Data
19. Business Logic Presentation Data Service
22. Controller Rule of Thumb A Controller May Contain: • Public REST methods • Private before_action setters • Private strong params method
23. Models
24. Business Logic Presentation Data View Controller Model
25. Business Logic Presentation Data View Controller Model
26. Business Logic Presentation Data View Controller Model Repository
28. Business Logic Presentation Data View Controller Validator Model
33. –Sandi Metz “duplication is far cheaper than the wrong abstraction”
34. YAGNI
35. Bonus Tip
38. Thanks for Listening Alexander Clark atheclark alexander-clark.com alexander-clark
39. Further reading • https://codeclimate.com/blog/7-ways-to-decompose-fat- activerecord-models/ • Patterns of Enterprise Application Architecture (Fowler) • Domain Driven Design (Evans) • All the Little Things (Metz) https://www.youtube.com/ watch?v=8bZh5LMaSmE • Ruby Object Mapper https://rom-rb.org/
40. Questions?