app/views/analytics/_customer_analytics_ga.haml
:plain
<!-- Google tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=#{google_analytics_key}"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', '#{google_analytics_key}');
</script>