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Test Driven Development, or...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
Abstractions should not depend upon details. Details should depend upon abstractions
The Interface Segregation Principle states that no client should be forced to depend on methods it does not use
Subclasses should add to a base classes behavior, not replace it
Software entities should be open for extension but closed for modification
A class should have only a single responsibility
See how you can use a form object to improve the way you implement custom and complex forms in Rails
Implement the decorator pattern with the Draper gem in your Rails application
Learn what the Decorator design pattern does and how to implement it from scratch
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