Individual skill

rails-patterns

Ruby on Rails framework patterns for Rails 7.1+ and 8.x apps. Covers the directory contract, skinny controllers with service objects, form objects, query objects, idiomatic ActiveRecord, background jobs, ViewComponent, Hotwire, and the Rails 8 Solid stack. Use when building or reviewing Rails apps, controllers, models, services, jobs, or views.

pi/core/skills/rails-patterns/SKILL.md

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Repository stars (not skill ratings): 299,570
Repository last updated: Nov 6, 2026
License: MIT

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# Rails Patterns

Framework patterns for modern Ruby on Rails applications (Rails 7.1+ and 8.x). Rails is opinionated by design; these are the patterns the community has converged on for apps that stay maintainable past the 50-model mark. This skill is the "how." For the "what" and "when" (the decisions about which pattern to reach for), see the Ruby patterns rules — `rules/ruby/patterns.md` in this repository, installed as `rules/ecc/ruby/patterns.md`.

## When to Activate

- Building a Rails application (full-stack, API-only, or hybrid)
- Reviewing a PR that touches `app/` or `config/`
- Generating models, controllers, services, or jobs
- A controller action grows past ~10 lines
- A model file grows past ~200 lines
- ActiveRecord queries start appearing in controllers or views

## Core Concepts