Upgrading to GA4

_config.yml

@@ -27,8 +27,8 @@ app_source_repo: https://github.com/TreeWalks/tree-walk-guide
 app_issues: https://github.com/TreeWalks/tree-walk-guide/issues/
 play_store_url: https://play.google.com/store/apps/details?id=dev.csaba.armap.treewalk
 
-# Google Analytics account ID (UA-XXXXXXXX-X)
-google-analytics-ua: UA-86563829-10
+# Google Analytics GA4
+google-analytics-ga4: G-L6LLMSMWGT
 gmaps_yo: "AIzaSyDUpDuBL2jGSyyYq4f1RtuxtL4X9JsK5jQ"
 main_map:
   lat: 36.812263

_includes/google-analytics.html

@@ -1,13 +1,10 @@
-<!-- Google Analytics Script -->
+<!-- Google tag (gtag.js) -->
+<script async src="https://www.googletagmanager.com/gtag/js?id={{ site.google-analytics-ga4 }}"></script>
 <script>
-    (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
-                (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
-            m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
-    })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
+  window.dataLayer = window.dataLayer || [];
+  function gtag(){dataLayer.push(arguments);}
+  gtag('js', new Date());
 
-    ga('create', '{{ site.google-analytics-ua }}', 'auto', {});
-    ga('send', 'pageview', {
-        'anonymizeIp': true
-    });
+  gtag('config', '{{ site.google-analytics-ga4 }}');
 </script>
-<!-- END Google Analytics Script -->
+<!-- END Google Analytics Script -->