It’s not always clear what kind of style guide a certain Ruby project is adhering to (if any). Often contributors to the project will have to do some digging in the code to figure this out on their own.

It’d be nice if more projects were more explicit about their code style preference, as that’s not a lot of work. It can be as simple as adding a badge to your README file that looks something like:

Ruby Style Guide

That badge targets the community Ruby style guide, which is the basis for RuboCop’s defaults, but you can use a similar badge for other Ruby style guides as well - e.g. those from GitHub and AirBnB.

If you have your own custom style guide, but you’re still using RuboCop to enforce it, you can go with something like this generic badge and link to your RuboCop config file:

Ruby Style Guide

Pretty simple and straightforward, right? The Markdown code for those badges is here:

[![Ruby Style Guide](https://img.shields.io/badge/code_style-community-brightgreen.svg)](https://rubystyle.guide)

[![Ruby Style Guide](https://img.shields.io/badge/code_style-rubocop-brightgreen.svg)](https://github.com/rubocop-hq/rubocop)

Feel free to tweak the badges to your liking. I hope that down the road I’ll get to see more of them in (public) Ruby projects. I also hope it’s clear that there’s nothing Ruby-specific about those badges and you can apply them to projects written in any programming language whatsoever.

That’s all I have for you today. Keep hacking!