Rails Style Guide is a community-driven style guide that documents best practices and coding conventions for Ruby on Rails development.
The guide addresses the need for consistent, maintainable code across Rails projects by presenting a set of prescriptive rules grounded in real-world Rails development experience. Rather than pursuing idealistic standards disconnected from actual practice, it emphasizes conventions that working programmers actually adopt and benefit from. The guide covers multiple sections of related rules, each with rationale explaining the reasoning behind the recommendations. It draws from professional software engineering experience, community feedback, and established Rails programming resources, with particular attention to practices applicable to recent Rails versions.
Rails developers should adopt this guide if they want a reference for writing code that other Rails programmers will recognize and maintain easily. It suits teams seeking to establish consistent style conventions and projects where code readability across contributors matters. The guide complements the existing community Ruby style guide and pairs with the rubocop-rails extension, which provides automated enforcement of these style recommendations through static analysis and code formatting.
The project maintains active engagement with the Rails community through translations into multiple languages, making the guidance accessible beyond English-speaking developers. The guide is available in multiple formats including an HTML version with improved navigation and a PDF version generated through AsciiDoctor, supporting different consumption preferences. Documentation is structured with clear sections, rationale for each rule, and practical configuration examples that developers can reference directly in their projects.
