rails group day 7

model actions and routing

Transcript

1. Rails Study Group
2. Git Flow • to start: always git pull origin <branch> • git checkout -b feature/my_feature_branch • write the code! • commit your code • git add path/to/files • git commit -m “your commit message” • git push • use github.com to make a pull request
3. MVC
4. MVC
5. MVC
6. MVC
7. MVC
8. MVC
9. Model Review
10. Create • your_variable = Model.new • your_model.save • your_model.save!
11. Find • Model.find(:id) • Model.find_by(attribute: value) • Model.find_by_attribute(value)
12. Index • Do you want to find a model by attribute? • Prevents “full table scan” • To add index • rails g migration AddIndexToTableColumn
13. Update • updates update_at timestamp • direct update with resave • update_attribute(:attribute, value) • update_attributes(attribute1: value, attribute2:value)
14. Destroy • a_model_instance.destroy
15. Validity • valid? • presence • length • format • uniqueness • roll your own!
16. Tests • Especially important for teams without QA • Ruby is dynamically typed - make sure you get what you are expecting • Provides a developer confidence in their code
17. Tests • They are auto-magically created for you!
18. Tests (green)
19. Tests (red)
20. Model Errors
21. Skinny Controller Fat Model
22. Routes
23. config/routes.rb
24. CRUD, Verbs, & Actions
25. CRUD, Verbs, & Actions
26. Path and URL Helpers
27. Route Restsrictions
28. rake routes
29. Reference • https://www.w3.org/Protocols/rfc2616/rfc2616- sec9.html • http://guides.rubyonrails.org/routing.html • https://www.railstutorial.org/book/ filling_in_the_layout