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This book will teach you the fundamentals of building a Rails application from the ground-up, complete with strict adherence to TDD and BDD.

Earlier editions of this book have been used by thousands of people to help their Ruby on Rails careers.

This book will show you how to build a fully-featured Rails 6 application that includes:

CSS styles
Authentication & Authorization
File uploading
Sending & receiving email
Deployment

This book follows community-approved standards of developing a Rails application. We use RSpec and Capybara for testing, Bootstrap for styling, and Devise for authentication. There's also Active Storage for file loading, Action Mailer for sending email and Heroku for deployment.

Knowledge pre-requisites

This book assumes knowledge of HTML, CSS and some Ruby. No Rails knowledge is required for this book; we'll teach you what you need to know!

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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