Ruby on Rails Best Practices

Full-stack Rails 8.1 guide organized as modular rules. Covers MVC core patterns, Active Record, components (jobs, mailer, cable, storage), security, testing, performance, and debugging.

ROUTING: Which rule file to load

IF working with models, database queries, associations, validations, or migrations: → Read rules/core-active-record.md

IF working with routes, controllers, params, sessions, cookies, or filters: → Read rules/core-routing-and-controllers.md

IF working with views, layouts, partials, ERB templates, or form helpers: → Read rules/core-views-and-forms.md

IF working with background jobs, emails, or WebSocket channels: → Read rules/component-jobs-mailer-cable.md