I've been reading similar questions, but many of the answers are outdated or not clear enough for me.

I'd like to be able to just do something like (in a controller action):

respond_to do |format|
  format.html
  format.csv
end

I know I'd then need a view such as action.csv.erb

So my questions are:

1) What do I need to configure in rails to allow this to happen in general.

2) How should I setup the CSV view to display some basic fields from a model?