You're reading from Layered Design for Ruby on Rails Applications Discover practical design patterns for maintainable web applications

Product type Paperback

Published in Aug 2023

Publisher Packt

ISBN-13 9781801813785

Length 298 pages

Edition 1st Edition

Languages

Ruby

Tools

Ruby on Rails

Concepts

Design Patterns

Author (1):

Vladimir Dementyev

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Table of Contents (20) Chapters

Preface

1. Part 1: Exploring Rails and Its Abstractions

2. Chapter 1: Rails as a Web Application Framework FREE CHAPTER

3. Chapter 2: Active Models and Records

4. Chapter 3: More Adapters, Less Implementations

5. Chapter 4: Rails Anti-Patterns?

6. Chapter 5: When Rails Abstractions Are Not Enough

7. Part 2: Extracting Layers from Models

8. Chapter 6: Data Layer Abstractions

9. Chapter 7: Handling User Input outside of Models

10. Chapter 8: Pulling Out the Representation Layer

11. Part 3: Essential Layers for Rails Applications

12. Chapter 9: Authorization Models and Layers

13. Chapter 10: Crafting the Notifications Layer

14. Chapter 11: Better Abstractions for HTML Views

15. Chapter 12: Configuration as a First-Class Application Citizen

16. Chapter 13: Cross-Layers and Off-Layers

17. Index

18. Gems and Patterns

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Concerning Rails concerns

In Ruby, we have classes and modules. Classes allow us to build object hierarchies via inheritance. Modules, technically, are just sets of methods (or mixins) that can be attached to classes or used independently. Semantically though, modules usually fall into one of the following categories:

Behavior: This includes behavior modules that add new features or serve a particular purpose for the class. Examples of behavior modules include Enumerable and Comparable.
Builder: These are modules extending Ruby class declaration capabilities via DSL – for example, Forwardable.
Static methods collection: These are modules acting as containers for static methods.
Namespace: These are modules that are used solely to isolate constants (classes, other modules).

This book will only talk about behavior modules (the first group), since they can be considered architectural elements.

Ruby on Rails, being an opinionated framework, treats modules...