Agile Web Development with Rails 7

Foreword to the Rails 7 Edition....11

Preface to the Rails 7 Edition....14

Acknowledgments....16

Introduction....18

Rails Simply Feels Right....19

Rails Is Agile....22

Who This Book Is For....24

How to Read This Book....25

Part I. Getting Started....29

1. Installing Rails....31

Installing on Windows....33

Installing on macOS....38

Installing on Linux....41

Choosing a Rails Version....46

Setting Up Your Development Environment....47

Rails and Databases....52

2. Instant Gratification....56

Creating a New Application....57

Hello, Rails!....61

Linking Pages Together....69

When Things Go Wrong....73

3. The Architecture of Rails Applications....79

Models, Views, and Controllers....80

Rails Model Support....84

Action Pack: The View and Controller....87

4. Introduction to Ruby....91

Ruby Is an Object-Oriented Language....92

Data Types....95

Logic....101

Organizing Structures....105

Marshaling Objects....109

Pulling It All Together....110

Ruby Idioms....112

Part II. Building an Application....116

5. The Depot Application....118

Incremental Development....119

What Depot Does....120

Let’s Code....125

6. Task A: Creating the Application....127

Iteration A1: Creating the Product Maintenance Application....128

Iteration A2: Making Prettier Listings....138

7. Task B: Validation and Unit Testing....149

Iteration B1: Validating!....150

Iteration B2: Unit Testing of Models....155

8. Task C: Catalog Display....171

Iteration C1: Creating the Catalog Listing....172

Iteration C2: Adding a Page Layout....177

Iteration C3: Using a Helper to Format the Price....180

Iteration C4: Functional Testing of Controllers....182

Iteration C5: Caching of Partial Results....186

9. Task D: Cart Creation....192

Iteration D1: Finding a Cart....193

Iteration D2: Connecting Products to Carts....195

Iteration D3: Adding a Button....199

10. Task E: A Smarter Cart....209

Iteration E1: Creating a Smarter Cart....210

Iteration E2: Handling Errors....218

Iteration E3: Finishing the Cart....223

11. Task F: Hotwiring the Storefront....231

Iteration F1: Moving the Cart....233

Iteration F2: Creating a Hotwired Cart....241

Iteration F3: Highlighting Changes....248

Iteration F4: Broadcasting Updates with Action Cable....252

12. Task G: Check Out!....261

Iteration G1: Capturing an Order....262

Iteration G2: Adding Fields Dynamically to a Form....278

Iteration G3: Testing Our JavaScript Functionality....286

13. Task H: Sending Emails and Processing Payments Efficiently....293

Iteration H1: Sending Confirmation Emails....294

Iteration H2: Connecting to a Slow Payment Processor with Active Job....303

14. Task I: Logging In....317

Iteration I1: Adding Users....318

Iteration I2: Authenticating Users....324

Iteration I3: Limiting Access....331

Iteration I4: Adding a Sidebar, More Administration....335

15. Task J: Internationalization....343

Iteration J1: Selecting the Locale....345

Iteration J2: Translating the Storefront....351

Iteration J3: Translating Checkout....360

Iteration J4: Adding a Locale Switcher....369

16. Task K: Receive Emails and Respond with Rich Text....374

Iteration K1: Receiving Support Emails with Action Mailbox....375

Iteration K2: Storing Support Requests from Our Mailbox....383

Iteration K3: Responding with Rich Text....391

17. Task L: Deployment and Production....404

Configuring the Database....407

Managing Secrets....410

Building a Docker Image....412

Getting Up and Running....416

Checking Up on a Deployed Application....418

18. Depot Retrospective....424

Rails Concepts....425

Documenting What We’ve Done....429

Part III. Rails in Depth....431

19. Finding Your Way Around Rails....433

Where Things Go....434

Naming Conventions....444

20. Active Record....451

Defining Your Data....452

Locating and Traversing Records....459

Creating, Reading, Updating, and Deleting (CRUD)....464

Participating in the Monitoring Process....483

Transactions....491

21. Action Dispatch and Action Controller....498

Dispatching Requests to Controllers....500

Processing of Requests....514

Objects and Operations That Span Requests....529

22. Action View....543

Using Templates....544

Generating Forms....547

Processing Forms....551

Uploading Files to Rails Applications....553

Using Helpers....558

Reducing Maintenance with Layouts and Partials....567

23. Migrations....580

Creating and Running Migrations....581

Anatomy of a Migration....585

Managing Tables....591

Advanced Migrations....598

When Migrations Go Bad....600

Schema Manipulation Outside Migrations....602

24. Customizing and Extending Rails....605

Creating a Reusable Web Component....606

Testing with RSpec....608

Creating HTML Templates with Slim....616

Customizing Rails in Other Ways....619

Where to Go from Here....620

Bibliography....624

Rails 7 completely redefines what it means to produce fantastic user experiences and provides a way to achieve all the benefits of single-page applications - at a fraction of the complexity. Rails 7 integrates the Hotwire frameworks of Stimulus and Turbo directly as the new defaults, together with that hot newness of import maps. The result is a toolkit so powerful that it allows a single individual to create modern applications upon which they can build a competitive business. The way it used to be.

Ruby on Rails helps you produce high-quality, beautiful-looking web applications quickly - you concentrate on creating the application, and Rails takes care of the details. Rails 7 brings many improvements, and this edition is updated to cover the new features and changes in best practices.

We start with a step-by-step walkthrough of building a real application, and in-depth chapters look at the built-in Rails features. Follow along with an extended tutorial as you write a web-based store application. Eliminate tedious configuration and housekeeping, seamlessly incorporate JavaScript, send and receive emails, manage background jobs with ActiveJob, and build real-time features using WebSockets and ActionCable. Test your applications as you write them using the built-in unit, integration, and system testing frameworks, internationalize your applications, and deploy your applications easily and securely.

Rails 1.0 was released in December 2005. This book was there from the start, and didn't just evolve alongside Rails, it evolved with Rails. It has been developed in consultation with the Rails core team. In fact, Rails itself is tested against the code in this book.

What You Need:

All you need is a Windows, Mac OS X, or Linux machine to do development on. This book will take you through the steps to install Rails and its dependencies. If you aren't familiar with the Ruby programming language, this book contains a chapter that covers the basics necessary to understand the material in the book.