app/helpers/application_helper.rb

@@ -83,7 +83,7 @@ module ApplicationHelper

                          when /\A(\d+)\z/
              

                            i.to_i
              

                          when /\A(\d+)?-(\d+)?\z/
              

                -           ($1 ? $1.to_i : 1)..($2 ? $2.to_i : (1/0.0))
              

                +           ($1 ? $1.to_i : 1)..($2 ? $2.to_i : Float::INFINITY)
              

                          else
              

                            []
              

                          end