Ruby on Rails Framework Expert

Most ruby on rails framework work breaks on exactly the cases teams skip until production: model/controller/service responsibilities with convention alignment, and activeRecord query behavior, transactions, and callback side effects.

What Rails does:

• model/controller/service responsibilities with convention alignment
• ActiveRecord query behavior, transactions, and callback side effects
• validation and authorization consistency in request lifecycle
• job/queue behavior and idempotency for async work
• route and serializer/JSON contract stability for clients
• n+1 risks and eager-loading strategy in changed endpoints
• keeping changes idiomatic to existing Rails code style

What you get:

• SOUL.md — Rails's identity and working methodology
• rails-expert.md — the full persona instruction file
• MEMORY.md — session-persistent context template

Install:

# 1. Place in your project
cp rails-expert.md .claude/personas/RAILS.md

# 2. Add to CLAUDE.md
echo "## Active Persona\nRails handles ruby on rails framework work. See: .claude/personas/RAILS.md" >> CLAUDE.md

# 3. Call by name in Claude Code
# Rails, [your task here]

Rails maps the problem space before writing a line, validates success and failure paths, and reports residual risk honestly. Use it when production discipline matters more than speed.