Hello RoR people,
First time here.
I have a question about calculations in rails.
For example i have two tables:
categories id name
and questions: id category_id name
How I can count questions in each category?
Please don't give me recepies like: :include => [:questions] or something like: @categories.each { |c| c.questions.count } Because those methods is not so much optimized, to run them on a production server.
Thank you, Dmitry for Estonia.
