the snippet which creates a csv for the given object, we could aslo use streaming to do this same to save memory consumption.

csv_creating.rb

csv_string = FasterCSV.generate do |csv|
      csv << ["Idea Name","Total Votes count","Date Created","Created By"]
      csv << [@idea.title, @idea.votes.size,@idea.created_at.strftime("%B %d, %Y"),@idea.created_by]
      csv << ["Months","Total Votes count"]
      votes_count.each_with_index do |i,j|

        csv << [month_names[j] , votes_count[j]     ]

      end


    end
    send_data csv_string,
              :type => "text/csv; charset=iso-8859-1; header=present",
              :disposition => "attachment; filename=Idea.csv"