Find number of months between two Dates in Ruby on Rails

Question

I have two Ruby on Rails DateTime objects. How to find the number of months between them? (Keeping in mind they might belong to different years)

Answer 1

(date2.year * 12 + date2.month) - (date1.year * 12 + date1.month)

more info at http://www.ruby-forum.com/topic/72120