skill-rails-upgrade

## When to Use This Skill Analyze Rails apps and provide upgrade assessments Use this skill when working with analyze rails apps and provide upgrade assessments. # Rails Upgrade Analyzer Analyze the current Rails application and provide a comprehensive upgrade assessment with selective file merging. ## Step 1: Verify Rails Application Check that we're in a Rails application by looking for these files: - `Gemfile` (must exist and contain 'rails') - `config/application.rb` (Rails application config) - `config/environment.rb` (Rails environment) If any of these are missing or don't indicate a Rails app, stop and inform the user this doesn't appear to be a Rails application. ## Step 2: Get Current Rails Version Extract the current Rails version from: 1. First, check `Gemfile.lock` for the exact installed version (look for `rails (x.y.z)`) 2. If not found, check `Gemfile` for the version constraint Report the exact current version (e.g., `7.1.3`). ## Step 3: Find Latest Rails Version Use the GitHub CLI to fetch the latest Rails release: ```bash gh api repos/rails/rails/releases/latest --jq '.tag_name' ``` This returns the latest stable version tag (e.g., `v8.0.1`). Strip the 'v' prefix for comparison. Also check recent tags to understand the release landscape: ```bash gh api repos/rails/rails/tags --jq '.[0:10] | .[].name' ``` ## Step 4: Determine Upgrade Type Compare current and latest versions to classify the upgrade: - **Patch upgrade**: Same major.minor, diff...