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Ruby on Rails 6.0 Release Notes
Highlights in Rails 6.0:
- Action Mailbox
- Action Text
- Parallel Testing
- Action Cable 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
Action Mailbox
Action Mailbox allows you to route incoming emails to controller-like mailboxes. You can read more about Action Mailbox in the Action Mailbox Basics guide.
Action Text
Action Text brings rich text content and editing to Rails. It includes the Trix editor that handles everything from formatting to links to quotes to lists to embedded images and galleries. The rich text content generated by the Trix editor is saved in its own RichText model that's associated with any existing Active Record model in the application. Any embedded images (or other attachments) are automatically stored using Active Storage and associated with the included RichText model.
You can read more about Action Text in the Action Text Overview guide.
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.
Action Cable Testing
Action Cable testing tools allow you to test your Action Cable functionality at any level: connections, channels, broadcasts.
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
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The ActionCable javascript package has been converted from CoffeeScript to ES2015, and we now publish the source code in the npm distribution.
This allows ActionCable users to depend on the javascript source code rather than the compiled code, which can produce smaller javascript bundles.
This change includes some breaking changes to optional parts of the ActionCable javascript API:
-
Configuration of the WebSocket adapter and logger adapter have been moved from properties of
ActionCableto properties ofActionCable.adapters. -
The
ActionCable.startDebugging()andActionCable.stopDebugging()methods have been removed and replaced with the propertyActionCable.logger.enabled.
-
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.