Evaluate function

问题

Is there a better way to write the following?

<cfloop list="#qry.Columnlist#" index="FieldName">
   <cfset "form.#FieldName#" = Evaluate("qry.#FieldName#")>
</cfloop>

This loop is assigning every field in the query to a corresponding form field. I understand the evaluate function is shunned.

回答1:

<cfloop list="#qry.Columnlist#" index="FieldName">
    <cfset form[FieldName] = qry[FieldName][1]>
</cfloop>

?

回答2:

Assuming you are returning a single recordset the following will work.

<cfloop list="#qry.Columnlist#" index="FieldName">
<cfset "form.#FieldName#" = qry[FieldName][1]>
</cfloop>

回答3:

Tangential, but if you were looping over multiple rows of a query, you could use the currentRow variable in the query object to do the same thing as the accepted answer.

<cfset var someStruct = {} />
<cfset var colummnList = queryObj.columnList />

<cfloop query="queryObj">
    <cfset someStruct[currentRow] = {} />        

    <cfloop list="#columnList#" index="fieldName">
        <cfset someStruct[currentRow][fieldName] = queryObj[fieldName][currentRow] />
    </cfloop>
</cfloop>

来源：https://stackoverflow.com/questions/2015429/evaluate-function