Error getting permission ID for Google Drive (Drive REST API, getIdForEmail)

Question

Error getting permission ID for Google Drive (Drive REST API, getIdForEmail)

I am building an application in SailsJS (v0.11) and Angular (v1.4.4) based on the Google API.

I use the Google Drive NodeJS library to get the user permission ID . Unfortunately this will not work. I use the following code to get the permission id.

sails.googleDrive.permissions.getIdForEmail({
    email: user.email
}, function(error, permissions) {
    console.log(error);
});

The code gives me the following output.

{
    [
        Error: LoginRequired
    ]
    code: 401,
    errors: [
        {
            domain: 'global',
            reason: 'required',
            message: 'Login Required',
            locationType: 'header',
            location: 'Authorization'
        }
    ]
}

All other things in my application, such as uploading files and pasting permissions on files and folders, work as expected. getIdForEmailis the only call that gives this error.

I am initializing the Google API as shown below.

// Google
var clientId = 'XXXXXXXXXXXXXXXXXXXX.apps.googleusercontent.com';
var clientSecret = 'XXXXXXXXXXXXXXXXXXXX';
var redirectUrl = 'http://XXXXXXXXXXXXXXXXXXXX/user/login/oauth2callback';

sails.google = require('googleapis');
sails.googleAuth = new sails.google.auth.OAuth2(clientId, clientSecret, redirectUrl);
sails.googlePlus = sails.google.plus('v1');
sails.googleCalendar = sails.google.calendar('v3');
sails.googleDrive = sails.google.drive('v2');