how to build a complete, real-world application from scratch with Ruby on Rails step by step.
A lot of Ruby code is "magic". We'll explain the magic and see how it works using the powerful tools Ruby gives us.
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We look at using the built in SimpleDelegator class to easily create decorators for objects.
Rails uses the MVC Pattern. This isn't as scary as it sounds. It's basically a design architecture that gives you 3 primary buckets to help you organize your code.
Building a gem can be complicated. Often times you're writing abstract, meta code so it can be used flexibly in situations you'll never imagine. We'll talk about the architecture and design of the noticed gem and how it all works.
Dependency Injection is a common technique for making your code more flexible and testable by removing strict dependencies upon other classes, modules, and other types of dependencies in your code
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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