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This is a Ruby library to read/write files/spreadsheets in Google Drive/Docs.

NOTE: This is NOT a library to create Google Drive App.

Migration from 0.3.x or before to ver. 1.0.x

Ver. 0.3.x and the versions before no longer works, because the API used was deprecated and shut down. You need to migrate to ver. 1.0.x.

Ver. 1.0.x is not 100% backward compatible with 0.3.x. Some methods have been removed. Especially, GoogleDrive.login has been removed, and you must use GoogleDrive.saved_session or GoogleDrive.login_with_oauth instead, as in the example code below.

How to install

$ sudo gem install google_drive

How to use

First, follow Step 1 and 2 of “Authorizing requests with OAuth 2.0” in this page to get a client ID and client secret for OAuth. Set “Application type” to “Other” in the form to create a client ID if you use GoogleDrive.saved_session method as in the example below.

Next, create a file config.json which contains the client ID and crient secret you got above, which looks like:

{
  "client_id": "xxxxxxxxxxxx-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.apps.googleusercontent.com",
  "client_secret": "xxxxxxxxxxxxxxxxxxxxxxxx"
}

Example to read/write files in Google Drive:

require "google/api_client"
require "google_drive"

# Creates a session. This will prompt the credential via command line for the
# first time and save it to config.json file for later usages.
session = GoogleDrive.saved_session("config.json")

# Gets list of remote files.
session.files.each do |file|
  p file.title
end

# Uploads a local file.
session.upload_from_file("/path/to/hello.txt", "hello.txt", convert: false)

# Downloads to a local file.
file = session.file_by_title("hello.txt")
file.download_to_file("/path/to/hello.txt")

# Updates content of the remote file.
file.update_from_file("/path/to/hello.txt")

Example to read/write spreadsheets:

require "google/api_client"
require "google_drive"

# Creates a session. This will prompt the credential via command line for the
# first time and save it to config.json file for later usages.
session = GoogleDrive.saved_session("config.json")

# First worksheet of
# https://docs.google.com/spreadsheet/ccc?key=pz7XtlQC-PYx-jrVMJErTcg
# Or https://docs.google.com/a/someone.com/spreadsheets/d/pz7XtlQC-PYx-jrVMJErTcg/edit?usp=drive_web
ws = session.spreadsheet_by_key("pz7XtlQC-PYx-jrVMJErTcg").worksheets[0]

# Gets content of A2 cell.
p ws[2, 1]  #==> "hoge"

# Changes content of cells.
# Changes are not sent to the server until you call ws.save().
ws[2, 1] = "foo"
ws[2, 2] = "bar"
ws.save

# Dumps all cells.
(1..ws.num_rows).each do |row|
  (1..ws.num_cols).each do |col|
    p ws[row, col]
  end
end

# Yet another way to do so.
p ws.rows  #==> [["fuga", ""], ["foo", "bar]]

# Reloads the worksheet to get changes by other clients.
ws.reload

API document: www.rubydoc.info/gems/google_drive

Source code

github.com/gimite/google-drive-ruby

The license of this source is “New BSD Licence”

Supported environments

Ruby 1.9.x or later. Checked with Ruby 1.9.3 and 2.2.1.

Author

Hiroshi Ichikawa - gimite.net/en/index.php?Contact

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