loop through customer records

customers.rb

url = "/api/v2/customers"
begin
  response = JSON.parse desk_client.get url

  response['_embedded']['entries'].each do |customer|
    desk_client.patch customer['_links']['self']['href'], {
      custom_fields: {
        some_field: 'Some Value'
      }
    }
  end

  url = response['_links']['next']['href'] rescue nil
end while not url.nil?