Add google analytics only in production

Hi,
I would like to add to my phoenix site the google analytics javascript code, how could enable it only in production?
Which type of if I need to add to the template?

    <script async src="https://www.googletagmanager.com/gtag/js?id=xyz"></script>
    <script>
      window.dataLayer = window.dataLayer || [];
      function gtag(){dataLayer.push(arguments);}
      gtag('js', new Date());

      gtag('config', 'xyz');
    </script>

Thanks

1 Like

You can include the analytics <script> tags conditionally to some configuration option. Then turn it on in config/prod.exs and not in other environments.

I add these lines

# config/releases.exs
config :my_app, env: :prod
# my_app_web/templates/layout/app.html.eex
<%= if Application.get_env(:my_app, :env) == :prod do %>
... google analytics
<% end %>
2 Likes

Maybe use some more descriptive config key though. :myapp, :env is hardly better than Mix.env(). E.g. config :my_app, analytics: true

7 Likes