What are all the "conventions" for Ruby on Rails?

frameworks, ruby, ruby-on-rails

Solution

If you want the official conventions, then nothing beats the original Rails book: Agile Web Development with Rails

But if you want the unwritten conventions, here's a good start: acts_as_good_style

Problem

I'm a Django person going into Rails, and I want a guide that shows me all the popular "conventions". For example: plurality, _form.html.erb, stuff like that. Can someone list them here? Or a webpage?

Original source