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Chris Oliver
Crafting Rails Plugins
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😱
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What is a Rails plugin?
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Rails Plugins
• Routes
• Models
• Views
• Controllers
• Jobs
• Etc
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Railtie vs Engine
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Railtie
The core of a Rails plugin
• Initializers
• Configuration
• Rake tasks
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Engine
Railtie with more features
• Models
• Controllers
• Views
• Routes
• Locales
• Tasks
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Your Rails app is an Engine.
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$ rails plugin new
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Railtie
rails plugin new my_railtie
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Engine
rails plugin new my_engine —full
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Mountable Engines
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Mountable Engine
rails plugin new my_mountable_engine —full —mountable
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\
Mounting Rails Engines in Routes
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Engine helper
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main_app helper
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Dependencies
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gemspec
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Load Order & Hooks
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Rails
Plugins
Rails Load Order
Initializers
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on_load callbacks
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Middleware
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–
Thoughtful government employees
“The website should work only
during business hours.
”
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🤔
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Configuration
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Configuration with Accessors
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Extending Rails Configuration
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Extending Rails Configuration
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Generators
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Extending Rails Generators
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Models & Migrations
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Rails Console
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Testing Rails Plugins
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test/dummy Rails App
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bin/rails test
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GitHub Actions
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Testing Ruby Versions
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Testing Rails Versions
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Appraisals
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Publishing
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Rake Release Task
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Rubygems Trusted Publishing
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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