Upgrade to Rails 4
Upgrade to Rails 4
A thorough guide for upgrading your Rails 3 app
About the Book
Covering new Rails 4 features such as Turbolinks, Live Streaming and Strong Parameters!
Have you been thinking of upgrading your Rails application to Rails 4 but don't know where to start? Are you curious about the new features Rails 4 introduces? Then Upgrade to Rails 4 is the perfect book for you.
Rails 4 introduces an abundance of new features. Learn about these to stay up to date with the latest developments, and modernize your application. All deprecated features will be covered in depth along with an explanation of how to replace them. Using the included checklist, you can verify that you have updated all breaking changes when upgrading your Rails 3 application.
Upgrade to Rails 4 contains more than 32 chapters covering important new and deprecated features in Rails 4.
Table of Contents
-
- Who should read this book
- About the Author
- Upgrading your Rails gem
-
New Features
-
Turbolinks
- How does it work?
- Disable Turbolinks
- How much faster is Turbolinks?
- Using Turbolinks in Rails 3
-
Controller-Wide ETags
- How does it work?
-
Russian Doll Caching
- How does it work?
- Cache Digests in Rails 3
-
Thread-safe by default
- Concurrency in Ruby
- MRI 1.8
- MRI 1.9
- MRI 2.0
- How does it work?
- Writing Thread-Safe Code
- Thread Safety in your web app
-
Live Streaming
- How does it work?
- What can we do with Live Streaming?
-
Encrypted Cookies
- How to upgrade
-
Routing Concerns
- How does it work?
- Using Routing Concerns in Rails 3
-
Strong Parameters
- Rails 4 Changes
- strong_parameters methods
- Using strong_parameters in Rails 3
- Default Headers
-
Postgres H-Store Support
- How does it work?
- H-Store in Rails 3
-
Active Model Absence Validator
- How does it work?
-
Schema Cache Dump
- How does it work?
-
Active Record Additions
- Null Object Pattern
- destroy!
- update_columns
- Default ordering added to first
- Multiple columns with Pluck
- IdentityMap Removed
-
Collection Form Helpers
- How does it work?
-
ActiveModel::Model
- How to upgrade
-
The HTTP Patch Verb
- Rails 4 Changes
- New Default Test Locations
- Active Record Not Equal Support
-
Custom Flash Types
- How does it work?
-
HTML5 Form Input Helpers
- week_field
- date_field
- month_field
- time_field
- datetime_field and datetime_local_field
- color_field
-
Turbolinks
-
Changes and Deprecated Features
- Dynamic Index Page
-
Page Caching
- Why it was removed
- How to upgrade
-
Action Caching
- Why it was removed
- How to upgrade
-
Observers and Sweepers
- Action Controller Sweeper
- Active Record Observer
- Why it was removed
- How to upgrade
-
Active Record Session Store
- Why it was removed
- How to upgrade
-
Sprockets
- Why it was removed
-
Renaming _filter callback to _action callback
- How to upgrade
-
No more vendor/plugins
- How to upgrade
-
Deprecated Active Record finders
- How to upgrade
-
Active Resource
- Why it was removed
- How to upgrade
-
Rails 4 requires Ruby 1.9 or higher
- Why is was removed
- How to upgrade
-
XML Parameter Parsing
- How to upgrade
- Why it was removed
-
Performance Tests
- How to upgrade
-
Install binstubs by default
- How does it work?
- Upgrade Checklist
-
What got scrapped
-
Background Queuing
- How it works
- How to upgrade
-
Asynchronous Action Mailer
- How it works
-
Background Queuing
- Closing Thoughts
-
Change log
-
- May 20, 2013
- September 22, 2013
-
Authors have earned$10,080,957writing, publishing and selling on Leanpub, earning 80% royalties while saving up to 25 million pounds of CO2 and up to 46,000 trees.
Learn more about writing on Leanpub
The Leanpub 45-day 100% Happiness Guarantee
Within 45 days of purchase you can get a 100% refund on any Leanpub purchase, in two clicks.
See full terms
Free Updates. DRM Free.
If you buy a Leanpub book, you get free updates for as long as the author updates the book! Many authors use Leanpub to publish their books in-progress, while they are writing them. All readers get free updates, regardless of when they bought the book or how much they paid (including free).
Most Leanpub books are available in PDF (for computers), EPUB (for phones and tablets) and MOBI (for Kindle). The formats that a book includes are shown at the top right corner of this page.
Finally, Leanpub books don't have any DRM copy-protection nonsense, so you can easily read them on any supported device.
Learn more about Leanpub's ebook formats and where to read them
Top Books
C++ Best Practices
Jason TurnerLevel up your C++, get the tools working for you, eliminate common problems, and move on to more exciting things!
Digital-First Events
Joep Piscaer and Jana BorutaThe only resource you will ever need to launch your digital events program.
C++20
Rainer GrimmC++20 is the next big C++ standard after C++11. As C++11 did it, C++20 changes the way we program modern C++. This change is, in particular, due to the big four of C++20: ranges, coroutines, concepts, and modules.
The book is almost daily updated. These incremental updates ease my interaction with the proofreaders.
Sockets and Pipes
Type ClassesSockets and Pipes is not an introduction to Haskell; it is an introduction to writing software in Haskell. Using a handful of everyday Haskell libraries, this book walks through reading the HTTP specification and implementing it to create a web server.
Atomic Kotlin
Bruce Eckel and Svetlana IsakovaFor both beginning and experienced programmers! From the author of the multi-award-winning Thinking in C++ and Thinking in Java together with a member of the Kotlin language team comes a book that breaks the concepts into small, easy-to-digest "atoms," along with exercises supported by hints and solutions directly inside IntelliJ IDEA!
Algebra-Driven Design
Sandy MaguireA how-to field guide on building leak-free abstractions and algebraically designing real-world applications.
Introducing EventStorming
Alberto BrandoliniThe deepest tutorial and explanation about EventStorming, straight from the inventor.
node-opcua by example
Etienne RossignonGet the best out of node-opcua through a set of documented examples by the author himself that will allow you to create stunning OPCUA Servers or Clients.
Ansible for DevOps
Jeff GeerlingAnsible is a simple, but powerful, server and configuration management tool. Learn to use Ansible effectively, whether you manage one server—or thousands.
Cloud Strategy
Gregor Hohpe“Strategy is the difference between making a wish and making it come true.” A successful migration to the cloud can transform your organization, but it shouldn’t be driven by wishes. This book tells you how to develop a sound strategy guided by frameworks and decision models without being overly abstract nor getting lost in product details.
Top Bundles
- #1
Software Architecture for Developers: Volumes 1 & 2 - Technical leadership and communication
2 Books
"Software Architecture for Developers" is a practical and pragmatic guide to modern, lightweight software architecture, specifically aimed at developers. You'll learn:The essence of software architecture.Why the software architecture role should include coding, coaching and collaboration.The things that you really need to think about before... - #2
Django for Beginners/APIs/Professionals
3 Books
- #3
CCIE Service Provider Ultimate Study Bundle
2 Books
Piotr Jablonski, Lukasz Bromirski, and Nick Russo have joined forces to deliver the only CCIE Service Provider training resource you'll ever need. This bundle contains a detailed and challenging collection of workbook labs, plus an extensively detailed technical reference guide. All of us have earned the CCIE Service Provider certification... - #4
Cisco CCNA 200-301 Complet
4 Books
Ce lot comprend les quatre volumes du guide préparation à l'examen de certification Cisco CCNA 200-301. - #5
Linux Administration Complet
4 Books
Ce lot comprend les quatre volumes du Guide Linux Administration :Linux Administration, Volume 1, Administration fondamentale : Guide pratique de préparation aux examens de certification LPIC 1, Linux Essentials, RHCSA et LFCS. Administration fondamentale. Introduction à Linux. Le Shell. Traitement du texte. Arborescence de fichiers. Sécurité... - #6
Modern Management Made Easy
3 Books
Read all three Modern Management Made Easy books. Learn to manage yourself, lead and serve others, and lead the organization. - #7
PowerShell
3 Books
Buy every PowerShell book from Adam Bertram at a 20% discount! - #8
Mastering Containers
2 Books
Docker and Kubernetes are taking the world by storm! These books will get you up-to-speed fast! Docker Deep Dive is over 400 pages long, and covers all objectives on the Docker Certified Associate exam.The Kubernetes Book includes everything you need to get up and running with Kubernetes! - #9
CCDE Practical Studies (All labs)
3 Books
CCDE lab - #10
All the Books of The Medical Futurist
6 Books
We put together the most popular books from The Medical Futurist to provide a clear picture about the major trends shaping the future of medicine and healthcare. Digital health technologies, artificial intelligence, the future of 20 medical specialties, big pharma, data privacy, digital health investments and how technology giants such as Amazon...