THE UNOFFICIAL 37SIGNALS/DHH RAILS STYLE GUIDE

Summary from the TLDR Dev newsletter

This GitHub gist contains a Claude Code-generated style guide based on a deep analysis of 37signal's open source project management tool, Fizzy. Claude Code was used to analyze the entire code base to extract the patterns used and infer the philosophy of implementation choices. The guide contains patterns extracted from actual code, guidance based on observed conventions, notes on what's deliberately absent, and reusable code that can be copied into personal projects.