through_options

# File activerecord/lib/active_record/associations/preloader/through_association.rb, line 48
        def through_options
          through_options = {}

          if options[:source_type]
            through_options[:conditions] = { reflection.foreign_type => options[:source_type] }
          else
            if options[:conditions]
              through_options[:include]    = options[:include] || options[:source]
              through_options[:conditions] = options[:conditions]
            end

            through_options[:order] = options[:order]
          end

          through_options
        end