Applications First, Frameworks Second

This is the short presentation before the start of my workshop at Railsconf 2014. The deck is short. It's just an introduction to the code found on github. https://github.com/ahawkins/applications-first-frameworks-second see https://github.com/ahawkins/applications-first-frameworks-second/pulls?direction=asc&page=1&sort=created&state=closed to work though the steps.

Transcript

1. Applications First,! Frameworks Second Railsconf 2014 Workshop by @adman65 https://github.com/ahawkins/applications-first-frameworks-second https://github.com/ahawkins/chassis
2. Agree with DHH?
3. This may be the wrong place
4. I may be an! Architecture ! Astronaut
6. We’re Making a Blog!
7. Patterns
8. Tests
9. Service Objects
10. Form Objects
11. Repository
12. Chassis
13. ActiveRecord
14. ActionPack
15. Go
16. Step 1: pulls/1 • Make “bundle exec rake” run tests • Create a failing test to ensure things work correctly • git checkout feature/step-1 ; git checkout HEAD~2
17. Step 2: pulls/2 • git checkout -b feature/step-1; git checkout -b my-step-2 • Create a failing acceptance/integration/system test • This test should create a “Post” with a “title” & “text” attributes • Test that this object is persisted some how • PublishPost — Service Object — instantiated with the form • PublishPostForm — models input — instantiated with a Hash • PostRepo — manages the Posts
18. Step 3: pulls/3 • git checkout -b feature/step-2 • Write a unit test for the “Post” class • Test it can be initialized with a Hash • ruby test/post_test.rb
19. Step 4: pulls/4 • git checkout -b feature/step-3 • Define “PublishPostForm” • Hint: use Chassis.form (see chassis readme) • Hint: nothing to test yet
20. Step 5: pulls/5 • git checkout feature/step-4 • Create “PostRepo” • Use Chassis::Repo::Delegation • Refer to chassis README for an example • No tests needed for this one
21. Step 6: pulls/6 • Introduce a stub “PublishPost” service object • It should implement the interface in the acceptance tests • Don’t add functionality
22. Step 7: pulls/7 • Write that implementation • Hint: include Chassis::Persistence in Post
23. Step 8: pulls/8 • Add another test case to the acceptance test that does not include a “text”/“title” • Make it pass! • Hint: add validation to the form • Chassis.repo.clear
24. Step 9: pulls/9 • Add Rails, • I’ll do this • Let’s talk about it
25. Step 10: pulls/10 • Time to think in HTML • Use capybara to create failing tests and submits a form and then displays the post
26. Step 11: pulls/11 • Make it green
27. Step 12: pulls/12 • Make UI handle validation errors
28. Step 13: pulls/13 • Persistence with ActiveRecord