The Rails 7 Way
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The Rails 7 Way

About the Book

With a foreword written by Eileen M. Uchitelle, Rails Core Team

“When I read The Rails Way for the first time, I felt like I truly understood Rails for the first time.”—Steve Klabnik, Rails contributor and mentor

The Rails™ 7 Way is the comprehensive, authoritative reference guide for professionals delivering production-quality code using modern Ruby on Rails. It illuminates the entire Rails 7 API, its most powerful idioms, design approaches, and libraries. Building on the previous editions, this edition has been heavily refactored and updated. It features entirely new chapters on Action Mailbox, Active Storage, asset pipelines, ViewComponent, and Turbo.

Through detailed code examples, you’ll dive deep into Ruby on Rails, discover why it’s designed as it is, and learn to make it do exactly what you want. Proven in thousands of production systems, the knowledge in this book will maximize your productivity and help you build more successful solutions.

  • Build powerful, scalable, REST-compliant back-end services
  • Program complex program flows using Action Controller
  • Represent models, relationships, and operations in Active Record, and apply advanced Active Record techniques
  • Smoothly evolve your database schema via Migrations
  • Craft maintainable front-ends with ActionView
  • Build your assets with one of the asset pipelines
  • Optimize performance and scalability with caching and Turbo
  • Improve your productivity using Haml templating
  • Secure your systems against attacks like SQL Injection, XSS, and XSRF
  • Integrate email using Action Mailer and Action Mailbox
  • Improve responsiveness with background processing
  • Build “API-only” back-end projects that speak JSON
  • Store your files in the cloud via Active Storage
  • Leverage Multiple Databases
  • Write a reactive application with little to no JavaScript

About the Authors

Lucas Dohmen
Lucas Dohmen

Lucas is the team lead of the web team at komoot. He is working on web development and architecture on the front and back end for almost 20 years now. He is programming in Ruby and JavaScript – with Rails being his go-to framework for Web applications since 2006.

Tom Henrik Aadland
Tom Henrik Aadland

Tom is a Business Architect at Ørn Software where he is building the bridge between business strategy and development. 

Tom was an early adopter and advocate of Rails, specialising in it since 2006. During his spare time he enjoys travelling, reading and music. One of his adventures led him to Argentina Buenos Aires where he spent a decade, pioneering in remote working and living life as a digital nomad before the term was even coined. There he was the founder of the first Rails conference in the Southern Cone, Locos por Rails 2009. When he is not working on some project he spends his time with his wife and two kids.

Obie Fernandez
Obie Fernandez

The "one and only" Obie Fernandez is an avid writer and technology enthusiast, in addition to achieving worldwide success as an electronic music producer and touring DJ. He currently serves as Director and Chief Consultant of MagmaLabs, headquartered in Colima, Mexico.

Obie's last jobby job was SVP of Engineering at NYC tech darling 2U. He has been CTO and co-founder of many startups including Mark Zuckerberg's beloved Andela and Trevor Owen's Lean Startup Machine. His published books include the acclaimed business title The Lean Enterprise. He also founded one of the world's best known Ruby on Rails web design and development agencies, Hashrocket and is author of the bible of Rails development, The Rails Way and series editor for Addison-Wesley's Professional Ruby Series.

On the rare occasion when Obie is not busy building products, consulting clients or writing books, you can find him behind the lens of his camera or DJing in the dust at Burning Man.

Follow @obie on Twitter or email him at obiefernandez@gmail.com 

Table of Contents

  • Foreword
  • About the Authors
  • Acknowledgments
  • Introduction
    • About This Book
    • Voices from other experts
    • Goals
    • Prerequisites
    • Book Structure
    • Licenses, Attributions and Trademark Notice
  • Rails Configuration and Environments
    • Generating a new Rails Application
    • Bundler
    • RSpec and Haml
    • Running a Rails application
    • Default Initializers
    • Other Common Settings
    • Zeitwerk
    • Development Mode
    • Test Mode
    • Production Mode
    • Configuring Application Secrets
    • Configuring a Database
    • Logging
    • Default Gems
    • Rack
    • Conclusion
  • Routing
    • The Two Purposes of Routing
    • The routes.rb File
    • Named Routes
    • Scoping Routing Rules
    • Listing Routes
    • Conclusion
  • REST, Resources, and Rails
    • REST in a Rather Small Nutshell
    • Resources and Representations
    • REST in Rails
    • Routing and CRUD
    • The Standard RESTful Controller Actions
    • Singular Resource Routes
    • Nested Resources
    • Routing Concerns
    • RESTful Route Customizations
    • Controller-Only Resources
    • Different Representations of Resources
    • The RESTful Rails Action Set
    • Conclusion
  • Working with Controllers
    • Action Dispatch: Where It All Begins
    • Parameters
    • Render onto View…
    • Additional Layout Options
    • Redirecting
    • Controller/View Communication
    • Action Callbacks
    • Streaming
    • The respond_to Method
    • Conclusion
  • Cookies, Session Management and the Flash
    • Cookies
    • Session
    • The Flash
    • What to Store in a Cookie
    • What to Store in the Session
    • Conclusion
  • Action View & Haml
    • Haml
    • Layouts and Templates
    • Partials
    • Conclusion
  • Active Record Migrations
    • Creating Migrations
    • Defining Columns
    • Data Migration
    • Database Schema and Sequencing
    • Database Seeding
    • Database-Related Tasks
    • Conclusion
  • Working with Active Record
    • The Basics
    • Macro-Style Methods
    • Defining Attributes
    • CRUD: Creating, Reading, Updating, Deleting
    • Database Locking
    • Ignoring Columns
    • Connections to Multiple Databases
    • Using the Database Connection Directly
    • Convention over Configuration
    • Conclusion
  • Active Record Associations
    • The Association Hierarchy
    • One-to-Many Relationships
    • Belongs to Associations
    • Has Many Associations
    • Many-to-Many Relationships
    • One-to-One Relationships
    • Working with Unsaved Objects and Associations
    • Association Extensions
    • The CollectionProxy Class
    • Conclusion
  • Working with Queries
    • Query Methods
    • Custom SQL Queries
    • Scopes
    • Query Log Tags
    • Conclusion
  • Validations
    • Finding Errors
    • Included Validations
    • Common Validation Options
    • Conditional Validation
    • Short-form Validation
    • Custom Validation Techniques
    • Skipping Validations
    • Working with the Errors object
    • Conclusion
  • Advanced Active Record
    • Polymorphic has_many Relationships
    • Modules for Reusing Common Behavior
    • Delegated Types
    • Non-Persisted Models
    • Callbacks
    • Attributes API
    • Serialized Attributes
    • Enums
    • Generating Secure Tokens
    • Calculation Methods
    • Batch Operations
    • Single-Table Inheritance (STI)
    • Abstract Base Model Classes
    • Foreign-key Constraints
    • Value Objects
    • Modifying Active Record Classes at Runtime
    • PostgreSQL
    • Other Connection Methods
    • Conclusion
  • Forms
    • The basics of form_with
    • FormOptionsHelper
    • The Date and Time Selection Helpers
    • Conclusion
  • Internationalization
    • Localized Views
    • I18n Setup
    • Setting and Passing the Locale
    • Setting Locale from Client Supplied Information
    • Internationalizing Your Application
    • Organization of Locale Files
    • Looking Up Translations
    • How to Store Your Custom Translations
    • Exception Handling
    • Conclusion
  • All About Helpers
    • AssetTagHelper
    • AssetUrlHelper
    • AtomFeedHelper
    • CacheHelper
    • CaptureHelper
    • ControllerHelper
    • CspHelper
    • CsrfHelper
    • DateHelper
    • DebugHelper
    • FormHelper, FormOptionsHelper and FormTagHelper
    • JavaScriptHelper
    • NumberHelper
    • OutputSafetyHelper
    • RenderingHelper
    • SanitizeHelper
    • TagHelper
    • TextHelper
    • TranslationHelper
    • UrlHelper
    • Writing Your Own View Helpers
    • Wrapping and Generalizing Partials
    • Conclusion
  • Authentication and Authorization
    • Warden
    • Devise
    • has_secure_password
    • Pundit
    • Conclusion
  • Security
    • Password Management
    • Log Masking
    • TLS (Transport Layer Security)
    • Model Mass-assignment Attributes Protection
    • SQL Injection
    • Cross-Site Scripting (XSS)
    • CSRF (Cross-Site Request Forgery)
    • Content Security Policy
    • Permissions Policy
    • Session Fixation Attacks
    • Conclusion
  • Caching and Performance
    • View Caching
    • Data Caching
    • Control of Web Caching
    • ETags
    • Conclusion
  • RSpec
    • Introduction
    • Behavior-Driven Development
    • Basic Syntax and API
    • Custom Expectation Matchers
    • Helper Methods
    • Shared Behaviors
    • Shared Context
    • Test Doubles
    • Running Specs
    • factory_bot
    • Testing Tool Belt
    • Writing Specs for your Rails App
    • Conclusion
  • Background Processing
    • Active Job
    • Queueing Backends
    • Conclusion
  • Active Storage
    • Setup
    • Expense Report
    • Representations and Variants
    • Removing Files
    • Production
    • Conclusion
  • Action Mailer and Action Mailbox
    • Mailer Models
    • Previews
    • Testing Email Content
    • Configuration
    • Receiving Emails
    • Conclusion
  • Asset Pipeline
    • Propshaft
    • importmap-rails
    • dartsass-rails
    • tailwindcss-rails
    • A workflow without Node, npm or yarn
    • CSS & JS Bundling
    • The Rails Core Team Options
    • faucet-pipeline
    • Assets in Production
    • Conclusion
  • Component-Based Views
    • Installation and Configuration
    • Bootstrap
    • Styling the Flash
    • Component Helper
    • Closing the Alert
    • Slots
    • Rendering Collections
    • Previews
    • Working with Components
    • Adding Items to our Invoice
    • Conclusion
  • JavaScript
    • Turbo Drive
    • Turbo Frames
    • Turbo Streams
    • Broadcasting TurboStreams
    • Custom Elements
    • Alternatives
    • Conclusion
  • Notes

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