rails

name	rails
description	Rails 8 expert - covers MVC, services, queries, SQLite production, Kamal deployment, and debugging patterns
metadata	{"tags":"rails, ruby, sqlite, kamal, deployment, mvc, services"}

When to use

Use this skill for Rails 8 applications:

• Rails architecture, models, controllers, and conventions
• Service objects and query patterns
• Database queries and debugging with SQLite
• Production deployment with Kamal
• Log analysis and debugging

How to use

This skill is organized into reference files by topic:

• references/rails-patterns.md - MVC, services, queries, jobs
• references/rails-style.md - Code style and conventions
• references/sqlite-production.md - Production SQLite config
• references/kamal-deployment.md - Deployment with Kamal 2
• references/debugging.md - Log analysis and debugging

Read only the reference file relevant to your current task.

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Quick Reference

File Organization

app/
├── models/
│   └── concerns/           # Shared model behavior
├── controllers/
│   └── concerns/           # Authentication, Authorization
├── services/               # Domain business logic
├── queries/                # Complex database queries
├── jobs/                   # Background jobs (Solid Queue)
└── errors/                 # Custom error classes

Essential Commands

bin/dev                     # Start dev server
bin/rails test             # Run tests
bin/rubocop --autocorrect   # Fix linting
bin/rails runner "..."      # Execute Rails code

Code Style Rules

• Double quotes only (not single)
• NO trailing whitespace
• Endless methods for one-liners: def name = "..."
• Alphabetize associations, scopes, validations
• Run bin/rubocop --autocorrect before commits