My Top 5 Tips to Get Ready for Upgrading to Rails 5.2.
- Ensure as much test coverage as possible
- Upgrade to the latest 5.1.x release (step through each major release if you are on earlier versions such as 5.0.x or 4.x)
- Fix All Deprecation Warnings
- Setup error tracking (Rollbar, etc)
- Use railsdiff.org to help you upgrade your files correctly