Rails google-ads-ruby setting up - ruby-on-rails

Question

I am trying to use the google-ads-ruby library to allow our ruby on rails application users to connect our app with Google Ads and pull some stats from their account for them.
I installed the gem and managed to authenticate a user and get the refresh_token.
Now I'm trying to start collecting data from Google.
The first thing that fails is their instructions to require the gem in my code with require 'google/ads/google_ads'
I tried adding it to my controller and got cannot load such file -- google/ads/google_ads
Then, according to their instructions, I should be able to run this:
client = Google::Ads::GoogleAds::GoogleAdsClient.new do |config|
config.client_id = Rails.application.secrets.google_oauth_client_id
config.client_secret = Rails.application.secrets.google_oauth_client_secret
config.developer_token = Rails.application.secrets.google_developer_token
config.refresh_token = #user.google_ads.refresh_token
end
accessible_customers = client.service.customer.list_accessible_customers().resource_names
accessible_customers.each do |resource_name|
puts "Customer resource name: #{resource_name}"
end
and then list, for example, the user's accounts, as described here.
However, I am getting uninitialized constant Google::Ads::GoogleAds
Does anyone know what is going on?

Answer 1

Have you tried?
client = ::Google::Ads::GoogleAds::GoogleAdsClient.new do |config|
config.client_id = Rails.application.secrets.google_oauth_client_id
config.client_secret = Rails.application.secrets.google_oauth_client_secret
config.developer_token = Rails.application.secrets.google_developer_token
config.refresh_token = #user.google_ads.refresh_token
end

Answer 2

This is not really an answer to my question. I was unable to find a solution, but doing some more digging, I found the AdsWords on Rails example app Google added to that same gem and the documentation
The app is slightly outdated and you will probably hate getting it to work. Also, it's written in a very cryptic way and includes so many functions just to use their API... but I was able to make it work. To be honest, someone should write a tutorial.
Hope this may give some clues to someone who's lost at some point.