# File lib/model/mongo_mapper.rb, line 37
      def extjs_type(col)
        type = col.type.to_s
        case type
          when "DateTime", "Date", "Time"
            type = :date
          when "String"
            type = :string
          when "Float"
            type = :float
          when "Integer", "BigDecimal"
            type = :int
          else
            type = "auto"
        end
      end