I’ve been absorbing standard Ruby style by osmosis, but I did finally stumble across an actual style guide including one specific to Rails. We use The Elements of Java Style for our java code at the office and it works pretty well. I like the comment:
There is no place in Ruby where lowerCamelCase is ever used.
I’m guessing that was specifically for us Java guys. Of course it’s a wiki page so that comment may not survive forever.