Google Classroom, Ruby, Rails: @NotGoogleAppsUser with test account

Question

I've got a test account for Classroom from Google (that is, all services apart from Classroom are disabled for it). Following the example as in https://developers.google.com/classroom/quickstart/ruby (with slight modifications), I'm able to log in and fetch details e.g. about the student's courses.

However what I want to do is utilize it in a Rails app. I'm using omniauth-google-oauth2 and google-api-ruby-client (the new 0.9.x branch). After having fetched the token for that test account from Google (I've triple checked that it is this account and not any other profile I use) I'm trying to access data from Google::Apis::ClassroomV1::ClassroomService, but it keeps telling me:

Sending HTTP get https://classroom.googleapis.com/v1/courses?pageSize=10
403
#<Hurley::Response GET https://classroom.googleapis.com/v1/courses?pageSize=10 == 403 (319 bytes) 748ms>
Caught error forbidden: @NotGoogleAppsUser The user is not a Google Apps user.
Error - #<Google::Apis::ClientError: forbidden: @NotGoogleAppsUser The user is not a Google Apps user.>

Google::Apis::ClientError: forbidden: @NotGoogleAppsUser The user is not a Google Apps user.

The code I use is:

require 'google/apis/classroom_v1'

module GoogleIntegration::Client
  Classroom = Google::Apis::ClassroomV1

  def self.create(token)
    service = Classroom::ClassroomService.new
    scopes = ['https://www.googleapis.com/auth/classroom.courses.readonly', 'profile', 'email']
    service.authorization = Google::Auth.get_application_default(scopes)
    service.authorization.access_token = token
    service.client_options.application_name = 'Membean Classroom Sample'
    service
  end

and in the controller:

service = GoogleIntegration::Client.create(request.env['omniauth.auth'].credentials.token)
response = service.list_courses(page_size: 10)

noogui noogui · Accepted Answer · 2016-07-20T01:44:27

According to Classroom API Access Errors:

NotGoogleAppsUser indicates that the requesting user does not belong to a Google Apps domain.

Possible Action: Prompt the user to re-authenticate using a "Google Apps for Education" account. Provide a link to using multiple accounts so the user can select the correct account.

Google Classroom, Ruby, Rails: @NotGoogleAppsUser with test account

1 Answers