Design Patterns Episodes - Ruby on Rails Screencast Tutorials

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

34m

Designing & Building the Noticed gem

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.

11m

The MVC Pattern Explained

Apr 04, 2023

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.

15m

Decorating with SimpleDelegator and Modules

Apr 10, 2023 Pro

We look at using the built in SimpleDelegator class to easily create decorators for objects.

17m

Law of Demeter and Delegation

Aug 07, 2023 Pro

In this episode, we will dip our toes into an Object Oriented Design Principle known as the Law of Demeter. We will then look at an example of a small violation of this principle followed by a couple of solutions to remedy the issue.

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Decorators From Scratch

Feb 22, 2017 Pro

Decorators with the Draper Gem

Feb 27, 2017

Form Objects Design Pattern

Mar 28, 2017 Pro

Single Responsibility Principle

Apr 04, 2018 Pro

Open Closed Principle

Apr 17, 2018 Pro

Liskov Substitution Principle

May 15, 2018 Pro

Interface Segregation Principle

Jun 06, 2018 Pro

Dependency Inversion Principle

Jun 13, 2018 Pro

How to use Dependency Injection in Ruby

Jan 08, 2020