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Test Driven Development, or...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
See how you can use a form object to improve the way you implement custom and complex forms in Rails
Learn how to add sidebar search filters like Amazon.com using ElasticSearch's aggregations in Searchkick
Refactor and simplify your associations and views using Null Objects that let you remove conditionals and have more robust code
Learn how to polish your Stripe subscriptions by adding update card forms, cancellation buttons, and letting users seamlessly resubscribe
Learn how to pull business logic out of your models and put them into Plain Old Ruby Objects (POROs) in order to clean up your code and keep chunks of business logic in reusable bits.
Software entities should be open for extension but closed for modification
Learn how to add Stripe Webhooks into your Rails application
Learn how to schedule posts in draft, published, and scheduled modes
A look into the popular CanCanCan library to add authorization to your Rails app
Learn how to invite users to your application with devise_invitable
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