Ruby Rules

Version: Ruby 3.3+

Tooling

• Linting: rubocop
• Testing: RSpec or Minitest
• Package management: Bundler

Best Practices (2026)

• Enable YJIT for 30-50% performance improvement over Ruby 2.7
• Use Hotwire (Turbo + Stimulus) as default frontend stack
• Use Turbo Streams for partial page updates without full requests
• Prefer incremental Rails upgrades (e.g., 6.1 → 7.0 → 7.2)
• Use Rails conventions - they solve real pain points

Rails 7.2+ Features

• Hotwire is the default frontend framework
• Zeitwerk autoloading
• Parallel testing
• Multi-database support

Hotwire Patterns

# Turbo Stream response
respond_to do |format|
  format.turbo_stream do
    render turbo_stream: turbo_stream.replace(@user)
  end
end

<!-- Turbo Frame for partial updates -->
<turbo-frame id="user_<%= @user.id %>">
  <%= render @user %>
</turbo-frame>

Performance

• Use eager loading to prevent N+1 queries
• Use counter caches for frequently counted associations
• Use Russian Doll caching with cache keys

Rails 8 Features (Preview)

• Solid Queue for background jobs
• Built-in authentication generator
• Ruby 3.3+ required for best performance

MoAI Integration

• Use Skill("moai-lang-ruby") for detailed patterns
• Follow TRUST 5 quality gates