How to build structure from cfquery? - json

Question

I have cffunction that should return JSON structure. There is more than 50 columns that I have to return. Instead of building my structure manually I would like to build that dynamically. So first loop through query then loop through each table column. Here is example:
<cffunction name="getRecords" access="remote" output="true" returnformat="JSON">
<cfargument name="userID" type="string" required="true">
<cfset fnResults = StructNew()>
<cfquery name="myQuery" datasource="test">
SELECT
ur_first,
ur_last,
ur_dob,
ur_gender,
ur_email,
ur_address,
... and the rest of the columns
FROM Users
WHERE ur_id = <cfqueryparam value="#trim(arguments.userID)#" cfsqltype="cf_sql_char" maxlength="15">
ORDER BY ur_createDt
</cfquery>
<cfset fnResults.recordcount = myQuery.recordcount>
<cfloop query="myQuery">
<cfset qryRecs = StructNew()>
<cfloop array="#myQuery.getColumnList()#" index="columnName">
<cfset qryRecs.'#columnName#' = URLEncodedFormat('#columnName#')>
</cfloop>
</cfloop>
<cfset fnResults.data = qryRecs>
<cfreturn fnResults>
</cffunction>
This error I'm getting back after Ajax call:
CFML variable name cannot end with a "." character.
The variable qryRecs. ends with a "." character. You must either provide an additional structure key or delete the "." character.
Referencing to this line:
443 : <cfset qryRecs.'#columnName#' = URLEncodedFormat('#columnName#')>
I want to set column name to structure qryRecs like this:
<cfset qryRecs.ur_first = URLEncodedFormat(myQuery.ur_first)>
This way I don't have to set 50 plus columns manually. They all should be created dynamically. If anyone can help please let me know.

Answer 1

I created an ArrayCollection object that can convert a ColdFusion query to a few different JSON formats. Take a look and see if this fits your needs.
For example, this query:
<cfquery name="rs.q" datasource="cfbookclub">
SELECT DISTINCT
bookid,
title,
genre
FROM
books
WHERE
title LIKE <cfqueryparam value="%#arguments.term#%" cfsqltype="cf_sql_varchar" />
ORDER BY
genre, title
</cfquery>
will be converted to this JSON:
{
"data": [
{
"bookid": 8,
"genre": "Fiction",
"title": "Apparition Man"
},
{
"bookid": 2,
"genre": "Non-fiction",
"title": "Shopping Mart Mania"
}
]
}
I'm also working on an update that adds meta data to the return message:
{
"success": true,
"message": "Array Collection created.",
"meta": {
"offset": 0,
"pageSize": 0,
"totalRecords": 0
},
"data": []
};