Changes/Ruby on Rails 6.0

Ruby on Rails 6.0

Summary

Ruby on Rails 6.0 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 33
• Last updated: 2020-08-07
• FESCo issue: #2458
• Tracker bug: #1867219
• Release notes tracker: #548

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 5.2 in Fedora 32 to 6.0 (latest version) in Fedora 33. 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 6.0 will bring new Action Mailbox, Action Text, Multiple DBs, Parallel Testing, Webpacker by default, and Zeitwerk. Update to Rails 6.0 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 6.0.x	#1742788	PR
rubygem-actionmailbox	New in 6.0.x	#1859414
rubygem-actionmailer	Update to 6.0.x	#1742789	PR
rubygem-actionpack	Update to 6.0.x	#1742790	PR
rubygem-actiontext	New in 6.0.x	#1859416
rubygem-actionview	Update to 6.0.x	#1742791	PR
rubygem-activejob	Update to 6.0.x	#1742792	PR
rubygem-activemodel	Update to 6.0.x	#1742793	PR
rubygem-activerecord	Update to 6.0.x	#1742794	PR
rubygem-activestorage	Update to 6.0.x	#1742796	PR
rubygem-activesupport	Update to 6.0.x	#1742797	PR
rubygem-rails	Update to 6.0.x	#1742800	PR
rubygem-railties	Update to 6.0.x	#1742801	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 6.0
• Release engineering: #9618

• 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 6.0 from upstream

gem install rails -v 6.0.x
rails new app
cd app && rails s

• Go to http://127.0.0.1:3000/ and make sure you are running Rails 6.0.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 6.0.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 6.0.x

User Experience

• New version of Ruby on Rails (6.0) available
• The most significant Rails 6.0 features:
  • Action Mailbox
  • Action Text
  • Multiple DBs
  • Parallel Testing
  • Webpacker by default
  • Zeitwerk

Dependencies

• There are several packages, which depends on Ruby on Rails framework.
• These needs to be surely updated:
  • rubygem-sass-rails
• Following gems don't support Rails 6.0 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 6.0.

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_0_release_notes.html
• https://weblog.rubyonrails.org/2019/8/15/Rails-6-0-final-release/
• https://weblog.rubyonrails.org/2020/5/18/Rails-5-2-4-3-and-6-0-3-1-have-been-released/