Ruby on Rails 6.0 Release Notes — Ruby on Rails Guides

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 changelogs or check out the list of commits in the main Rails repository on GitHub. 1. Upgrading to Rails 6.0If you're upgrading an existing application, it's a great idea to have good test cove

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