Can I use CoffeeScript in the views executed on render.js?

Question

What do I need to do so that I can use CoffeeScript in the Rails JS views? For example:

def index
    format.js { render :layout => false } 
end

Answer 1

This is now working in Rails 3.2. For example, I have a resource named book. This resource has a file at app/views/books/index.html.erb with the following:

<%= link_to 'test me', new_book_path(color: 'blue'), remote: true %>

Then I have a file at app/views/books/new.js.coffee at ≈ with the following code:

test = ->
  'this is a test'

console.log test()
console.log( "<%= params[:color] %>" )

I see:

'this is a test'
'blue'

in my browser console.