Ruby on Rails Screencast Tutorials | GoRails

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.

5

Decorating with SimpleDelegator and Modules

Apr 10, 2023 Pro

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

5

Designing & Building the Noticed gem

Aug 24, 2020 Pro

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.

6

Dependency Inversion Principle

Jun 13, 2018 Pro

Abstractions should not depend upon details. Details should depend upon abstractions

12

Interface Segregation Principle

Jun 06, 2018 Pro

The Interface Segregation Principle states that no client should be forced to depend on methods it does not use

2

Liskov Substitution Principle

May 15, 2018 Pro

Subclasses should add to a base classes behavior, not replace it

9

Open Closed Principle

Apr 17, 2018 Pro

Software entities should be open for extension but closed for modification

10

Single Responsibility Principle

Apr 04, 2018 Pro

A class should have only a single responsibility

26

Form Objects Design Pattern

Mar 28, 2017 Pro

See how you can use a form object to improve the way you implement custom and complex forms in Rails

16

Decorators From Scratch

Feb 22, 2017 Pro

Learn what the Decorator design pattern does and how to implement it from scratch

18

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