rails-upgrade

To plan a Rails upgrade while preserving local customizations, you need a selective merge strategy that compares your current version against the target release, reviewing railsdiff and official upgrade notes to apply only necessary config and dependency changes without overwriting local modifications.

Determining the impact of upgrading a Rails version involves detecting your current version, identifying the latest release, and classifying the upgrade type as patch, minor, or major, then summarizing config changes and JavaScript dependency impacts to quantify the overall migration effort.

Upgrading Rails alongside JavaScript dependencies requires analyzing the target Rails version diffs to identify required JS package changes, then incorporating those dependency updates into a unified, action-ready upgrade plan with selective file merges to minimize disruption.

Yes, you can generate an actionable upgrade plan for Rails projects of varying sizes by detecting the current version, retrieving official upgrade guides and railsdiff data, and creating selective merge steps that guide the migration while preserving local customizations.

A selective merge approach for Rails migration is necessary when your application contains local customizations that must be preserved, allowing you to apply only the required config and framework changes from the target version while leaving your project-specific modifications intact.