How to loop through cfspreadsheet headers? - coldfusion

Question

I have an excel file that I am trying to read and then display the values of the headers in a drop down. The first row in my excel file has all of the values (header names).
I used the code below, but what happens is that all the header names appear in a single line with commas. I want the headers to be separated, so that it will appear in the drop down with many <option>, instead of a single <option>. How do I do that?
<!-- Read the header values from excel -->
<cfset spreadsheet = "uploads/spreadsheet.xlsx">
<cfspreadsheet action="read" headerrow="1" src="uploads/spreadsheet.xlsx" query="excelHeader" rows="1" />
<cfset excelHeaders = excelHeader.columnList>
<!-- Display the header names as a dropdown -->
<select name="id_headers">
<option>
#excelHeaders#
</option>
</select>

Answer 1

You can try this code;
<!--- create new spreadsheet and populate with sample data --->
<cfset theSheet = SpreadsheetNew("Expenses")>
<cfset SpreadsheetSetCellValue(theSheet,"column1",1,1)>
<cfset SpreadsheetSetCellValue(theSheet,"column2",1,2)>
<cfset SpreadsheetSetCellValue(theSheet,"column3",1,3)>
<cfset SpreadsheetSetCellValue(theSheet,"column4",1,4)>
<!--- Write the spreadsheet to a file, replacing any existing file. --->
<cfset pathToFile = GetDirectoryFromPath(GetCurrentTemplatePath()) & "newSpreadsheet.xls">
<cfspreadsheet action="write" filename="#pathToFile#" name="theSheet" overwrite=true>
<!--- Read spreadsheet into query object --->
<cfspreadsheet action="read" headerrow="1" src="#pathToFile#" query="excelHeader" rows="1">
<!--- Display the header names as a dropdown --->
<cfoutput>
<select name="id_headers">
<cfloop list="#excelHeader.columnList#" index="option">
<option>#option#</option>
</cfloop>
</select>
</cfoutput>
You can run this code snippet in trycf