# File lib/mongo_mapper/plugins/rails.rb, line 28
      def read_attribute_before_type_cast(name)
        @__mm_pre_cast ||= {}
        name = unalias_key name
        if !@__mm_pre_cast.key?(name)
          @__mm_pre_cast[name] = read_attribute(name)
        end
        @__mm_pre_cast[name]
      end