The document discusses clean architecture principles, emphasizing the importance of a use-case driven approach and the separation of concerns within software design. It outlines the typical project journey and encourages developers to simplify views while maintaining control over API interactions. The conclusion highlights the advantages of using a structured architecture that is independent of frameworks, UI, and external libraries while needing time to adapt.

1. Clean architecture
Why? How? For who?
Nicolas De Boose
CTO - beelance.io

2. Hexagonal
Architecture
MVP
Onion
Architecture
Use-Case
Driven Approach
(BCE)
Screaming
Architecture
https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html

3. The typical project journey

4. "Web" MVC
Controller
DB
ViewModel

5. "Web" MVC
Controller
DB
View
fn
Model

6. After 1 year
of dev

8. 1. Divide and .. keep control

9. API
CLI
DB
API
AMQP
AMQP

10. API
CLI
DB
API
AMQP
AMQP

11. API
CLI
DB
API
AMQP
AMQP

12. API
CLI
DB
API
AMQP
AMQP

13. API
CLI
DB
API
AMQP
AMQP

14. API
CLI
W S
DB
API
AMQP
AMQP

15. API
CLI
W S
DB
API
<i>
AMQP
AMQP

16. API
CLI
W S
DB
API
<i>
AMQP
AMQP

17. API
CLI
W S
DB
API
<i>
AMQP
AMQP

18. API
CLI
W S
DB
API
<i>
Primary actors Secondary actors
AMQP
AMQP

19. 2. Keep it where it belongs

20. What is the most important inyour application ?

21. Use cases ARE the center of your application
Login
Register
Add to basket
Confirm basket
Logout
Add product
Add credit card
Search

22. Register

23. Register
Input boundary
Output boundary

24. Register
Input boundary
Output boundary

26. 3. Simplify the view

27. • search-products.html.twig
• search-products.blade.php
• search-products.tpl

28. Use caseView

29. Use casePresenter
VM
View
Presenter
HTML
VMhtml
TwigBlade Presenter
JSON
VMjson
json_encode Presenter
CLI
VMcli
Sf consolePHP CLI

30. Presenter <l>
Controller
Presenter
View
Use case
Response
ViewModel
Request
Repository <l>
Repository
Implementation
DB
Entity
Model
Service
Presentation layer
Domain layer
Data layer

32. Presenter <l>
Controller
Presenter
View
Use case
Response
ViewModel
Request
Repository <l>
Repository
Implementation
DB
Entity
Model
Service
Presentation layer
Domain layer
Data layer

33. Presenter <l>
Use case
Response
Request
Repository <l>
Repository
Implementation
DB
Entity
Model
Service
Presentation layer
Domain layer
Data layer

35. Presenter <l>Presenter
Response
ViewModel
Repository
Implementation
DB
Presentation layer
Domain layer
Data layer

37. View
ViewModel
Repository
Implementation
DB
Presentation layer
Domain layer
Data layer

38. Conclusion
Independent of Framework
Testable
Independent of UI
Independent of Database
Independent of any external library
Structure
More classes
Need time to adapt
Be pragmatic !

39. https://blog.cleancoder.com/uncle-bob/2012/08/13/the-clean-architecture.html
https://github.com/Nikoms/eco-logic
https://github.com/Nikoms/clean-architecture-example
http://www.mechantblog.com
http://www.beelance.io

40. Merci
https://joind.in/talk/ad08d
@NicoDeBoose

41. Bonus slides