quarter()
Returns the quarter for a date/time.
Date.new(2010, 1, 31).quarter # => 1 Date.new(2010, 4, 12).quarter # => 2 Date.new(2010, 9, 15).quarter # => 3 Date.new(2010, 12, 25).quarter # => 4
# File activesupport/lib/active_support/core_ext/date_and_time/calculations.rb, line 166 def quarter (month / 3.0).ceil end