I'm using cfdocument to create a pdf. Displaying the pdf in the browser works fine, but I would like to just open a download prompt when the user opens that url.
<cfdocument format="PDF" localUrl="yes" margintop="0.25" orientation="landscape">
What I tried: I followed this and added a filename: https://community.adobe.com/t5/coldfusion-discussions/how-to-use-cfdocument-create-a-pdf-file-and-save-the-file-in-server/td-p/966276
But it just saves that file in a lucee temp folder.
What I want is that it opens a prompt and asks the user, where he wants to save that file.
I'm pretty sure you can't prompt the "save as" directly. The cause is that nowadays most browsers save the file immediately/directly to the "download" folder by default. For example in Chrome the user can deactivate this behaviour in "Settings -> Downloads -> Ask where to save each file before downloading". A similar setting exists in Firefox.
However, if you don't want to display the PDF in the browser but start a direct download, just add the http headers used for that. This is an example how to achieve it ( I've tested this on Lucee only but should work for ACF the same way):
<cfheader name="Content-Transfer-Encoding" value="binary">
<cfheader name="Content-Disposition" value="attachment; filename=""somefilename.pdf""">
<cfheader name="Content-Type" value="application/pdf">
<cfdocument format = "PDF" pagetype="A4" orientation="portrait">
Just a test for download!
</cfdocument>
If you omit the attribute filename="somefilename.pdf" of the Content-Disposition response header, the name of the url will be taken. Alternatively you could ask the user to specify a name in a form input field and populate that variable. But it still will be downloaded to the "download" directory as specified in the users browser setting.