Changes/Ruby on Rails 6.1

Ruby on Rails 6.1

Summary

Ruby on Rails 6.1 is the latest version of well known web framework written in Ruby.

Owner

• Name: Pavel Valena, Vít Ondruch, Jun Aruga
• Email: pvalena@redhat.com, vondruch@redhat.com, jaruga@redhat.com, ruby-sig@lists.fedoraproject.org

Current status

• Targeted release: Fedora 34
• Last updated: 2020-12-17
• FESCo issue: <will be assigned by the Wrangler>
• Tracker bug: <will be assigned by the Wrangler>
• Release notes tracker: <will be assigned by the Wrangler>

Detailed Description

The Ruby on Rails stack is evolving quickly and Fedora needs to keep pace with it. Therefore the whole Ruby on Rails stack should be updated from 6.0 in Fedora 33 to 6.1 (latest version) in Fedora 34. This will ensure that all the Ruby developers using Fedora have the latest and greatest RPM-packaged Ruby on Rails.

Benefit to Fedora

This update will keep Fedora up-to-date and will ensure that the current Ruby on Rails developers stay with us as they will get support for system-packaged Ruby on Rails of the latest version. Apart from that, update to Rails 6.1 will bring Horizontal Sharding, Multi-DB Improvements, Strict Loading, Destroy Associations in Background, Error Objects and more. Update to Rails 6.1 contains hundreds of other fixes and improvements across all the frameworks.

Scope

• Proposal owners:
  • The whole Rails stack has to be updated.
  • Some dependencies of the Rails stack will need update.

Packages need to be created/updated

Package name	Task	Bug	Pull Request
rubygem-actioncable	Update to 6.1.x	#1906179	PR
rubygem-actionmailbox	Update to 6.1.x	N/A	PR
rubygem-actionmailer	Update to 6.1.x	N/A	PR
rubygem-actionpack	Update to 6.1.x	N/A	PR
rubygem-actiontext	Update to 6.1.x	N/A	PR
rubygem-actionview	Update to 6.1.x	N/A	PR
rubygem-activejob	Update to 6.1.x	N/A	PR
rubygem-activemodel	Update to 6.1.x	N/A	PR
rubygem-activerecord	Update to 6.1.x	N/A	PR
rubygem-activestorage	Update to 6.1.x	#1906180	PR
rubygem-activesupport	Update to 6.1.x	N/A	PR
rubygem-rails	Update to 6.1.x	#1906183	PR
rubygem-railties	Update to 6.1.x	N/A	PR

Current development state can be observed in pvalena/ruby-on-rails COPR repository.

• Other developers: Update Rails dependent packages to be working with Ruby on Rails 6.1
• Release engineering: #

• Policies and guidelines: N/A (not a System Wide Change)
• Trademark approval: N/A (not needed for this Change)

Upgrade/compatibility impact

Web applications build above Ruby on Rails framework might need to be updated. Official upstream upgrade guide might come handy: http://guides.rubyonrails.org/upgrading_ruby_on_rails.html

How To Test

• No special hardware is needed.

To test Rails 6.1 from upstream

gem install rails -v 6.1.x
rails new app
cd app && rails s

• Go to http://127.0.0.1:3000/ and make sure you are running Rails 6.1.x

To test only Rails itself

dnf install rubygem-rails
rails new app
cd app && rails s

• Go to http://127.0.0.1:3000/ and make sure you are running Rails 6.1.x

To test the complete feature including generating a new Rails app using RPM

dnf group install 'Ruby on Rails'
rails new app --skip-bundle && cd app
rails s

• Go to http://127.0.0.1:3000/ and make sure you are running Rails 6.1.x

User Experience

• New version of Ruby on Rails (6.1) available
• The most significant Rails 6.1 features:
  • Multi-DB Improvements
  • Horizontal Sharding
  • Strict Loading Associations
  • Delegated Types
  • Destroy Associations Async
  • Error Objects
  • Active Storage Improvements
  • Disallowed Deprecation Support
• Please also note:
  • The classic Autoloader is Deprecated

Dependencies

• There are several packages, which depends on Ruby on Rails framework.
• These needs to be surely updated:
  • (none)
• Following gems don't support Rails 6.1 right now and would be broken by the update:
  • (none)
• As Rails requires Ruby >= 2.5, the platform less than the version can not use Rails 6.1.

Contingency Plan

• Contingency mechanism: None needed. Rails stack won't be updated until all its dependencies are in Rawhide. After that, it will be a simple matter of updating the core packages (and their dependencies).
• Contingency deadline: N/A (not a System Wide Change)
• Blocks release? No
• Blocks product? No

Documentation

• http://api.rubyonrails.org/

Release Notes

• https://edgeguides.rubyonrails.org/6_1_release_notes.html
• https://weblog.rubyonrails.org/2020/12/9/Rails-6-1-0-release/