With Google API Client, how to create client

Question

I\'m working to use the Google API Client: https://github.com/google/google-api-ruby-client

Specifically, I want to access Google Contacts via the Google API client usin

Answer 1

Note : As getting a contacts list usually requires a user's authentication to read private data, in the example below I assume that you've already implemented Oauth2 authentication with a sufficient scope and you got a valid ’token’ from that first step.

Lot of outdated/confusing documentation online because APIs' authentication and APIs themselves have been upgraded many times. To me most useful documentation is the one at http://www.rubydoc.info/github/google/google-api-ruby-client/

gem 'google-api-client' is still in alpha and moving quite fast, after lot of struggling I've been able to work with authenticated calls to Youtube, Gmail and Analytics APIS. I hope Contacts API work the same.

The Google API Ruby Client contains everything needed to manage API authentication and then request authorized subservices APIs. No need to struggle with Hurley, Signet or other HTTP/Rest clients.

#Gemfile
gem 'google-api-client'


#Class file
require 'google/api_client/client_secrets.rb' #Manage global google authentication
require 'google/apis/youtube_v3' #To be replaced with the proper Contact API

access = {...} #Credentials object returned by your Oauth strategy (gem 'omniauth-google-oauth2' works like a charm) 
secrets = Google::APIClient::ClientSecrets.new({
"web" => {"access_token" => access['token'], 
"refresh_token" => access['refresh_token'],
"client_id" => "xxxxxxxx.apps.googleusercontent.com", 
"client_secret" => "xxxxxxxxxxxx"}})

client = Google::Apis::YoutubeV3::YouTubeService.new #As per the require line, update it with you service API
client.authorization = secrets.to_authorization
client.authorization.refresh!

So far client variable is an authorized and ready to query object that I use like this for example in order to search for Youtube contents

client.list_searches('snippet', q: 'xxxxxx', type: 'channel'){ |res, err|