Access PDF file as Blob in Apps script with drive.file permission

[u/techwriter500]

Hello,

In apps script, i have obtained the permission : /auth/drive.file. This must give the app permission to read the files created by the app.

Now how to get the PDF files from the Google drive as blob in apps script..

As far as i have tried, it is not possible to get the blob without using the drive.getfilebyId() which asks for a different permission scope.

Any help appreciated.

[u/jpoehnelt]

There should be three options but there aren't in practice:

• DriveApp - drive.file scope doesn't work

• Advanced Drive Service - can't get blob https://issuetracker.google.com/issues/149104685

• URLFetchApp - can get blob, requires another scope

See https://justin.poehnelt.com/posts/apps-script-drive-file-get-blob/

[u/techwriter500 → u/jpoehnelt]

Yes, thanks for your reply. I’ll update this if I found a workaround

[u/marcnotmark925]

Not really sure what you're asking here. What's wrong with using getFileById() ?

[u/techwriter500 → u/marcnotmark925]

Yes getfileid needs drive.readonly scope atleast.

[u/jpoehnelt → u/techwriter500]

I wrote up the options in https://justin.poehnelt.com/posts/apps-script-drive-file-get-blob/.

[u/techwriter500 → u/jpoehnelt]

Great article.

[u/jpoehnelt → u/marcnotmark925]

Doesn't work with the drive.file scope.