<{input type="date" name="time_from" vtype="required" id="time_from" value="{$dateline.time_from}"}>    至    <{input type="date" name="time_to" vtype="required" id="time_to" value="{$dateline.time_to}"}>
   注:只支持查询开始与结束时间 7天之间的时间段;