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Cfspreadsheet to write to DOWNLOADS folder on loca PC

Posted on 2014-10-30
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Last Modified: 2014-10-31
What is CFPREADSHEET syntax to have CF generate an Excel spreadsheet  on the local PC in folder DOWNLOADS ?
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Question by:Errol Farro
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Expert Comment

by:_agx_
ID: 40414594
Depends on the source of the data and whether you need special formatting, but you can find a simple example in the docs. Just update the "fileName" path as needed.


<!--- get some sample data --->
<cfquery name="getCourses" datasource="cfdocexamples">
   SELECT CORNUMBER,DEPT_ID,COURSE_ID,CORNAME
   FROM COURSELIST
</cfquery>

<!--- Write the query to a file --->
<cfspreadsheet action="write"
    filename="c:\path\to\downloadsFolder\someFile.xls"
    query="getCourses"  
    sheetname="courses"
    overwrite="true">
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Author Comment

by:Errol Farro
ID: 40414656
The CF runs on a server and is being access from a local PC.

When creating an Excel using <cfcontent type="application/msexcel"> <cfheader name="Content-Disposition" value="filename=Results.xls">, the Results.xls file is always created on the local PC in the Downloads directory.

How can I get the same behavior using CFPSREADsheet but without specifying filename="C:\Users\userName\Downloads" where userName is the user who has activated the CF application?
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Accepted Solution

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_agx_ earned 500 total points
ID: 40414858
If your question is how to generate a download without saving it to a file on the server.  You could save it to a variable instead of a file:


Then return the binary:

... run query ...
<cfspreadsheet action="write"
    name="yourVariable"
    query="getCourses"  
    sheetname="courses"
    overwrite="true"> 

<cfheader name="Content-Disposition" value="filename=Results.xls">
<cfcontent type="application/msexcel" variable="#SpreadsheetReadBinary(yourVariable)#">

Open in new window


However, saving to a file isn't necessarily a bad thing. You could save it ram://  OR to a temp file on disk. Then use <cfcontent deletefile="true" ...> to automatically remove the file when the download is finished.

>The Results.xls file is always created on the local PC in the Downloads directory.

Not exactly.  Server side code can't save anything on a user's computer without their consent. The content is generated on the server, and the cfheader/cfcontent trigger a download/save prompt in the user's browser.  Ignoring the browser's temp directory, the file isn't saved on the user's computer until they click the "Save As" button in their browser. The fact that it may be saved to C:\Users\userName\Downloads is entirely dependent on browser settings.   ie That is the default for windows, but the path can be set to anything you want.
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