Group records by both month and year in Rails

Question

I\'m on Ruby 1.9.2, Rails 3.0.x and I use MySQL DB. I have a Messages Model, where one can post new messages every day.

I have an index action where I want to display t

Answer 1

In SQL:

select * from messages group by year(created_at), month(created_at);

In Rails:

Message.all.group_by { |m| m.created_at.beginning_of_month }