Crafting Rails Plugins

Ever wanted to build a plugin for Rails to add new features? Rails plugins allow you to hook into the lifecycle of a Rails application to add routes, configuration, migrations, models, controllers, views and more. In this talk, we'll learn how to do this by looking at some examples Rails gems to see how they work.

Transcript

2. Chris Oliver Crafting Rails Plugins
4. 😱
6. What is a Rails plugin?
9. Rails Plugins • Routes • Models • Views • Controllers • Jobs • Etc
11. Railtie vs Engine
12. Railtie The core of a Rails plugin • Initializers • Configuration • Rake tasks
13. Engine Railtie with more features • Models • Controllers • Views • Routes • Locales • Tasks
14. Your Rails app is an Engine.
16. $ rails plugin new
17. Railtie rails plugin new my_railtie
18. Engine rails plugin new my_engine —full
19. Mountable Engines
20. Mountable Engine rails plugin new my_mountable_engine —full —mountable
21. \ Mounting Rails Engines in Routes
22. Engine helper
23. main_app helper
24. Dependencies
25. gemspec
27. Load Order & Hooks
28. Rails Plugins Rails Load Order Initializers
33. on_load callbacks
37. Middleware
38. – Thoughtful government employees “The website should work only during business hours. ”
39. 🤔
44. Configuration
45. Configuration with Accessors
46. Extending Rails Configuration
47. Extending Rails Configuration
48. Generators
51. Extending Rails Generators
54. Models & Migrations
58. Rails Console
64. Testing Rails Plugins
65. test/dummy Rails App
66. bin/rails test
67. GitHub Actions
69. Testing Ruby Versions
71. Testing Rails Versions
73. Appraisals
78. Publishing
79. Rake Release Task
80. Rubygems Trusted Publishing
81. Your Turn! • Extract a feature • Something you wish existed • Just for learning • Read Rails plugin source code • Join me at the Hack Day! • Join Noel Rappin ’ s workshop tomorrow