Ruby Method for getting the Dates/months (this version is designed for getting months/First day of each month, and then parse out day later) between two dates. Example: Provide Date A and Date B and get month and Year(s) between two dates. Does not return Date A and Date B, only the dates between those dates. See: https://github.com/StephenOTT/a…

Determine Missing Months between Two Dates - Ruby

        def addMissingMonths (datesHash)
		count = 0

		datesHash.keys.each do |x|
			result = []
			if x != datesHash.keys.last
				(x+1.month).upto(datesHash.keys[count+1]-1.month) do |a|
				    # result << [a.month,a.year]
				    result << [a.at_beginning_of_month]
				end
				puts result.uniq.to_s
			end
			count += 1
		end
	end



Sample input for datesHas: {Sun, 01 Jan 2012=>58, Sat, 01 Sep 2012=>53, Sat, 01 Dec 2012=>58}
Output: 
[[Wed, 01 Feb 2012], [Thu, 01 Mar 2012], [Sun, 01 Apr 2012], [Tue, 01 May 2012], [Fri, 01 Jun 2012], [Sun, 01 Jul 2012], [Wed, 01 Aug 2012]]
[[Mon, 01 Oct 2012], [Thu, 01 Nov 2012]]

See https://github.com/StephenOTT/add_missing_dates_ruby for full code sample and updated changes