javascript - Ruby on Rails get google analytics visitors count and save into my app db. -

i working google analytics add in project. create account , added js code application footer section. want retrieve visitors information count, geo etc. need specific , simple solution that.

in app/services/google_analytics.rb file,

require 'google/api_client' require 'date'  class googleanalytics   def initialize     @client  = google::apiclient.new(:application_name => env['ga_app_name'], :application_version => '1.0')     key_file = file.join('config', env['ga_key_file_name'])     key = google::apiclient::pkcs12.load_key(key_file, 'notasecret')     service_account = google::apiclient::jwtasserter.new(       env['ga_service_account_email'],       ['https://www.googleapis.com/auth/analytics.readonly', 'https://www.googleapis.com/auth/prediction'],       key)     @client.authorization = service_account.authorize     @analytics = @client.discovered_api('analytics', 'v3')   end    def visitors(startdate, enddate, site_url)     parameters = {'ids' => "ga:" + env['ga_view_id'],                   'filters' => "ga:pagepath=~"+ site_url,                   'start-date' => startdate,                   'end-date' => enddate,                   'dimensions' => "ga:country,ga:source",                   'metrics' => "ga:sessions",                   'sort' => "-ga:sessions",                   'include-empty-rows' => false                 }     results = @client.execute(api_method: @analytics.data.ga.get, parameters: parameters)     if results.error?       puts results.error_message       return [0, {}, {}]     else       total_count = 0       countries = {}       sources = {}       results.data.rows.each |row|         total_count += row[-1].to_i         countries[row[0]] = countries[row[0]].to_i + row[-1].to_i         sources[row[1]] = sources[row[1]].to_i + row[-1].to_i       end       return [total_count, countries, sources]     end   end  end 

and in controller#action, add code this:

ga = ::googleanalytics.new() @total_visits, @countries, @sources = ga.visitors(start_date, end_date, @user.site_url) 

it works.