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Ruby on Rails 5.2 Release Notes
Highlights in Rails 5.2:
- Active Storage
- Redis Cache Store
- HTTP/2 Early hints support
- Credentials
- Default Content Security Policy
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 5.2
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 5.1 in case you haven't and make sure your application still runs as expected before attempting an update to Rails 5.2.
Major Features
Active Storage
Redis Cache Store
HTTP/2 Early hints support
Credentials
Default Content Security Policy
Incompatibilities
ToDo
Railties
Please refer to the Changelog for detailed changes.
Removals
ToDo
Notable changes
ToDo
Action Cable
Please refer to the Changelog for detailed changes.
Notable changes
ToDo
Action Pack
Please refer to the Changelog for detailed changes.
Removals
ToDo
Deprecations
ToDo
Notable changes
ToDo
Action View
Please refer to the Changelog for detailed changes.
Removals
ToDo
Deprecations
ToDo
Notable changes
ToDo
Action Mailer
Please refer to the Changelog for detailed changes.
Notable changes
ToDo
Active Record
Please refer to the Changelog for detailed changes.
ToDo
Deprecations
ToDo
Notable changes
ToDo
Active Model
Please refer to the Changelog for detailed changes.
Removals
ToDo
Notable changes
ToDo
Active Storage
Please refer to the Changelog for detailed changes.
Notable changes
ToDo
Active Support
Please refer to the Changelog for detailed changes.
Removals
ToDo
Deprecations
ToDo
Notable changes
ToDo
Active Job
Please refer to the Changelog for detailed changes.
Removals
ToDo
Notable changes
ToDo
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.