有没有办法容易地将cfquery输出转换为ColdFusion中的DataTable JSON格式？

问题描述

我想使用Google Charts API生成图表，但我似乎无法获取所需格式的数据。

I am trying to generate a chart using Google Charts API, but I can't seem to get the data in the required format.

serializeJSON（data）在coldfusion中给我的JSON数据，但看起来这不是Charts API的期望。是否有任何组件可以用来将其转换为所需的格式？

serializeJSON(data) in coldfusion gives me the JSON data, but looks like that is not what the Charts API expects. Is there any component I can use to convert it to the required format?

<cfquery name="getAllUsers" datasource="cccac_swipe" result="UserDetailsResult">
Select login_mode,count(login_mode) as total from login_activity,ccac_registered_users where login_activity.student_id=ccac_registered_users.student_id GROUP BY login_mode
</cfquery>

ColdFusion的JSON

ColdFusion's JSON

{"COLUMNS":["LOGIN_MODE","TOTAL"],"DATA":[["manual",123],["swipe",20]]}

预期的JSON

Expected JSON

{ "cols": [ {"id":"","label":"SignIn Method","pattern":"","type":"string"}, {"id":"","label":"Count","pattern":"","type":"number"} ], "rows": [ {"c":[{"v":"manual","f":null},{"v":123,"f":null}]}, {"c":[{"v":"swipe","f":null},{"v":20,"f":null}]} ] }

推荐答案

只需插入查询数据即可。

This is basically what you need. Just plug in your query data.

<cfset chartsData = structNew()>
<cfset chartsData["cols"] = arrayNew(1)>

<!--- use a query loop to copy query data to this struct --->
<cfloop query="UserDetailsResult">
   <cfset chartsRow = structNew()>
   <cfset chartsRow["id"] = "">
   <cfset chartsRow["label"] = "SignIn Method">
   <cfset chartsRow["pattern"] = "">
   <cfset chartsRow["type"] = "string">

   <cfset arrayAppend(chartsData["cols"], chartsRow)>
</cfloop>

<cfset chartsDataJSON = serializeJSON(chartsData)>

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