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rails-upgrade-6-to-7

Guide staged Ruby on Rails 6.x to 7.x upgrades with dual-boot and asset pipeline migration.

21|2|Updated May 24, 2026
Search Tags:#ruby on rails#rails upgrade#rails 6 to 7#zeitwerk autoloader#webpacker migration#hotwire adoption
One-click install
npx skills add https://github.com/sandeepmvl/rails-skills --skill rails-upgrade-6-to-7
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: rails-upgrade-6-to-7
Source: https://github.com/sandeepmvl/rails-skills/tree/main/skills/17-rails-upgrade-6-to-7
Command: npx skills add https://github.com/sandeepmvl/rails-skills --skill rails-upgrade-6-to-7

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Upgrading a Ruby on Rails application from version 6.x to 7.x involves high-risk breaking changes including mandatory Zeitwerk autoloader adoption, Webpacker removal, and Hotwire integration that can break existing functionality if handled incorrectly, and this skill eliminates guesswork by providing proven, senior-developer-backed migration guidance.

Core Features & Use Cases

  • Staged Version Hop Guidance: Walks through the required 6.0 → 6.1 → 7.0 → 7.1 upgrade sequence to avoid compatibility issues.
  • Asset Pipeline Decision Matrix: Helps you choose between importmap-rails, jsbundling-rails, or shakapacker based on your app's JavaScript needs.
  • Incremental Hotwire Adoption: Provides guidance for adding Turbo and Stimulus to legacy jQuery apps without a full rewrite.
  • Use Case: For a Rails 6.0 e-commerce platform with existing Webpacker and jQuery code, this skill guides you to dual-boot with next_rails, stage the Webpacker migration as a separate project, and incrementally adopt Hotwire on new pages first.

Quick Start

Use the rails-upgrade-6-to-7 skill to create a safe, staged upgrade plan for your Rails 6.0 application to Rails 7.1, including dual-boot setup and Webpacker migration recommendations.

Frequently Asked Questions about rails-upgrade-6-to-7

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is the required version hop sequence for upgrading Rails 6 to 7?▼

Upgrading Rails 6 to 7 requires a staged version hop sequence through 6.0, 6.1, 7.0, and 7.1 to avoid compatibility issues. This progression ensures that breaking changes are resolved incrementally before moving to the next major version.

How do I migrate from Webpacker in a Rails 6 to 7 upgrade?▼

Migrating Webpacker during a Rails 6 to 7 upgrade involves using an asset pipeline decision matrix to choose between importmap-rails, jsbundling-rails, or shakapacker. This allows you to stage the Webpacker migration as a separate project based on your JavaScript needs.

Can I adopt Hotwire incrementally in a legacy Rails 6 app?▼

You can adopt Hotwire incrementally in a legacy Rails 6 app by adding Turbo and Stimulus to new pages first. This approach provides guidance for integrating Hotwire without requiring a full rewrite of existing jQuery code.

Do I need to transition to the Zeitwerk autoloader for Rails 7?▼

Yes, transitioning to the Zeitwerk autoloader is mandatory when upgrading to Rails 7. The Rails 6 to 7 upgrade process specifically addresses this critical breaking change to ensure application functionality is not disrupted.

What is the best way to dual-boot a Rails application during an upgrade?▼

The best way to dual-boot a Rails application during an upgrade is to use the next_rails gem. This allows you to safely test your application against Rails 7 while maintaining your existing Rails 6 production environment.

Why does upgrading Rails 6 to 7 break existing application functionality?▼

Upgrading Rails 6 to 7 breaks existing functionality due to high-risk changes like mandatory Zeitwerk autoloader adoption, Webpacker removal, and Hotwire integration. Handling these critical updates incorrectly can disrupt legacy codebases.

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