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This commit adds a skeleton of "Ruby on Rails 6.0 Release Notes". It isn't a good time to add changelogs' entries to this guide since we can redo/revert some things till the final release 6.0. It would be better to do it close to the release. But we already can add mentions about major features that have been added to 6.0. I added mention about "Parallel Testing".
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DO NOT READ THIS FILE ON GITHUB, GUIDES ARE PUBLISHED ON https://guides.rubyonrails.org.
Ruby on Rails 6.0 Release Notes
Highlights in Rails 6.0:
- Parallel Testing
These release notes cover only the major changes. To learn about various bug fixes and changes, please refer to the change logs or check out the list of commits in the main Rails repository on GitHub.
Upgrading to Rails 6.0
If you're upgrading an existing application, it's a great idea to have good test coverage before going in. You should also first upgrade to Rails 5.2 in case you haven't and make sure your application still runs as expected before attempting an update to Rails 6.0. A list of things to watch out for when upgrading is available in the Upgrading Ruby on Rails guide.
Major Features
Parallel Testing
Parallel Testing allows you to parallelize your test suite. While forking processes is the default method, threading is supported as well. Running tests in parallel reduces the time it takes your entire test suite to run.
Railties
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Action Cable
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Action Pack
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Action View
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Action Mailer
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Active Record
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Active Storage
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Active Model
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Active Support
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Active Job
Please refer to the Changelog for detailed changes.
Removals
Deprecations
Notable changes
Ruby on Rails Guides
Please refer to the Changelog for detailed changes.
Notable changes
Credits
See the full list of contributors to Rails for the many people who spent many hours making Rails, the stable and robust framework it is. Kudos to all of them.