New RoR release brings many new features, better security, and increased performance. But depending on many factors, it's often not easy to upgrade your version. When you finally decided, you want it to be fast and safe.
In order to make update process comfortable, here is the list helpful tools, guides, checklists and other resources about updating Ruby. Some of them are related only for 4.x or 5.x, other are universal.
Framework written in the Ruby programming language
Dynamic, open source programming language with a focus on simplicity and productivity
List of the resources, that will help with update of any version.
Rails Official Release Guides
First place you should begin to search info about Rails update is the official release guides. With the newest version of Rails new guide is also uploaded. Guides are available from 3.0 up to 5.1. These materials are useful for covering the basic changes of each version and for handy tips.
Rails Upgrate Checklist
Rails Upgrade Checklist interface
Rails Upgrade Checklist is one of the most useful resources for anyone, who needs his Rails to be updated. Provides a starting point and helps to plan steps of your Rails update, depending on a version. At the moment, this check list is only for Rails 4 or lower. You can create pull requests to update the list here.
Very useful resource, that helps to find Rails documentation for each release. It covers all Rails code change from 2.3.6 to 5.1.1. Website provides line by line demonstration of changes in Rails app. For every separate Gem you use, you will have to make a test in your app. For someone that faced first update or for someone with no clue where to begin, RailsDiff is great tool.
Stackoverflow is well known as a helping resource, driven by community. Here you can ask any questions, regarding Ruby and Rails. Also, there's a lot of ready-made answers for every issue. For example, big thread about update from 4.2.6 to 5.0.
Rails section at Reddit
Same as StackOverflow, Reddit is community driven resources with answers to large amount of web development issues. It has Rails community, when you can ask both technical and career questions, Rails update issues is not exception.
Updating to Rails 5.x
Next links will be helpful for those, who plans to upgrade their Rails to version 5.0 or higher.
Is a gem ready for Rails 4 or 5?
By using this interesting website, you can figure out, are your key gems ready for upgrade or not. You can find what gems will cause conflicts and which ones are ready for upgrade. If some of your gems aren't ready for an update, it's good to wait for an update then look for another solution.
To stay updated on security files and other updates, you can use VersionEye tool. This solution checks your Git repository and informs you with any changes.
Updating to Rails 5.0 by Daniel Kehoe
Updating to Rails 5.0 by Daniel Kehoe
This big article-tutorial covers the topic of using RVM for managing of Rails version. You are free to use chruby or rbenv or you can follow exactly for Ruby Version Manager.
Rails 4.x and higher upgrade
If your Rails are few versions below, it is necessary to upgrade them. The easiest way is to go version by version. Here are some helpful resources for apps, that are on 3.x version.
Book "Upgrade to Rails 4" by Philip De Smedt
"Upgrade to Rails 4" cover
This ebook includes 32 chapters on different Rails 4 features, along with a detailed checklist for upgrading. It is good to have all necessary info by the hand when you are doing an update.
Screencast "Upgrading to Rails 4"
Upgrading to Rails 4 screencast
RailsCast is great resource for those, who like to learn visual. If you're updating your Rails to 4.x, RailCast created a screencast displaying the process for updating. The video takes you through the spots with main changes, and you can watch in real time.
How to Upgrade to Rails 4.2 by Justin Weiss
How to Upgrade to Rails 4.2 by Justin Weiss webpage
Justin provides some good tips for upgrading a Rails app to version 4.2. This tutorial shortly covers testing, Rails gem updates, and more. It doesn’t dig into the deep details, but is a good proffesional view of the best strategy for upgrading.
How To Upgrade a Big Legacy App to Rails 4
How To Upgrade a Big Legacy App to Rails 4 webpage
If you’re planning an upgrade for a big app, this article will give you overview how one team did it. This covers the creating of the development team, how good planning played a big role in the update, and the technical updates that were made along the way. If your team isn’t planning an update, this article also helps explain resource allocation and how features and technical stuff were balanced.
When I update rails, my go-to solution is Rails Diff. Also Rails Guides is a must-see resource since it’s written by the new features authors. Stackoverflow happens all the time since many gems are not so up to date, so sometimes Google sends me there first. Never used reddit btw.
Team Lead at Evrone