How to download file from google drive api with service account?

Question

Hello google hackers!

I am using Drive Service app and uploaded file successfully like this:

require 'googleauth'
require 'google/apis/drive_v2'

Drive = Google::Apis::DriveV2

upload_source = "/User/my_user_name/hacking.txt"
drive = Drive::DriveService.new
# Drive::AUTH_DRIVE is equal to https://www.googleapis.com/auth/drive
drive.authorization = Google::Auth.get_application_default([Drive::AUTH_DRIVE])
file = drive.insert_file({title: 'hacking.txt'}, upload_source: upload_source)

file has a lot of properties, like this: download_url

But when I try to open this download_url in browser it shows me blank screen. Why I can't download it?

I guess, that may be there are permission problems? But the scope is correct, and uploading is successful...

score 3 · Accepted Answer · answered Aug 07 '15 at 10:17

3

The answer is simple - we cannot download it from file object, we must send another get request, just download it like this:

drive.get_file(file.id, download_dest: '/tmp/my_file.txt')

answered Aug 07 '15 at 10:17

rs41

319
1
15

`puts service.get_file(invoice.id, download_dest: "temp.pdf")` creates empty file for me. – Nakilon Jan 18 '16 at 18:00
1

I got it. Had to increase token permissions up to `Google::Apis::DriveV2::AUTH_DRIVE` – Nakilon Jan 18 '16 at 18:35

How to download file from google drive api with service account?

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