ActiveSupport Concerns in Rails - YouTube
Getting Started with Rails — Ruby on Rails Guides
GitHub - rails/routing_concerns: Abstract common routing resource concerns to cut down on duplication.
Articles | Startup Rocket
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How to Use Controller Concerns in Rails 5 for Devise Custom Attributes
Rails Concerns: To Concern Or Not To Concern | AppSignal Blog
ActiveSupport Concerns in Ruby on Rails (Modules for callbacks and class methods)
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37signals Dev — Good concerns
Rails Concerns
ActiveSupport Concerns in Ruby on Rails (Modules for callbacks and class methods)
Rails Concerns: To Concern Or Not To Concern | AppSignal Blog
How to use Ruby on Rails Concerns | by JetThoughts | JTWay
Concerns in Rails - good or evil?
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Put chubby models on a diet with concerns – Signal v. Noise
Modules vs Concerns - YouTube
How Rails Concerns Work and How to Use Them - DEV Community
Ruby on Rails - Wikipedia
Rails Concerns: To Concern Or Not To Concern | AppSignal Blog
Rails Concerns for URL and Path Helpers | Kevin Sylvestre
Postal address, reusability, polymorphism and concerns in Ruby on Rails - DEV Community
ActiveSupport Concerns in Rails - YouTube
