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You can use Fixtures in Rai...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
Add liking or favoriting to your app like Facebook or Twitter
Learn how to capture credit cards and add paid subscriptions to your Rails app
Learn how to add advanced search, autocomplete, suggestions and more using Searchkick and ElasticSearch
Learn how to build an activity feed from scratch and how to manage lots of flexible partials
A guide to authorization with Pundit including a walkthrough of how to lock down your application, actions, and use default policies
Learn how to implement realtime notifications with ActionCable
Learn how to take a theme your purchased at WrapBootstrap, Themeforest, etc and build layouts for them in your Rails app
Learn what the Decorator design pattern does and how to implement it from scratch
Learn how to add background workers to your Rails app using ActiveJob and powering it with Sidekiq
A class should have only a single responsibility
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