Issue
I need to insert Google Tag Manager (gtag.js) dynamically for AngularJS. I manage a multi-tenant site where the Tracking Id is unique per tenant.
We did this previously (the old way using Google Analytics – analytics.js) like this:
index.html –
<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', '//www.google-analytics.com/analytics.js', 'ga');
</script>
app.controller.js –
function setupAnalytics() {
var googleTagEnabled = $settings.checkTrue('Analytics/GoogleTagEnabled');
var googleTag = $settings['Analytics/GoogleTag'];
if (googleTagEnabled) {
$window.ga('create', googleTag, 'auto');
$rootScope.$on('$stateChangeSuccess', function (event) {
$window.ga('send', 'pageview', $location.path());
});
}
}
How can this be done using the new gtag method?
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=UA-XXXXXXXXX-YY"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'UA-XXXXXXXXX-YY');
</script>
Solution
Solved it.
Kudos to Luke Boris’s answer here:
https://stackoverflow.com/a/66530446/1098620
Combine with Chris Anker’s answer here:
https://stackoverflow.com/a/48124899/1098620
index.html
<!-- no code here. -->
app.controller.js
function setupAnalytics() {
var googleTagEnabled = $settings.checkTrue('Analytics/GoogleTagEnabled');
var googleTag = $settings['Analytics/GoogleTag'];
if (googleTagEnabled) {
// Setting dataLayer & gtag to window because I'm using a custom code text field in a tag management system
window.dataLayer = window.dataLayer || [];
window.gtag =
window.gtag ||
function() {
window.dataLayer.push(arguments);
};
window.gtag("js", new Date());
window.gtag("config", googleTag);
// Set initial gtag/js?id=<first ID> script to <head>
var script = document.createElement("script");
script.type = "text/javascript";
script.async = true;
script.src = "//www.googletagmanager.com/gtag/js?id=" + googleTag;
document.getElementsByTagName("head")[0].appendChild(script);
$rootScope.$on('$stateChangeSuccess', function (event) {
$window.gtag('config', googleTag, {'page_path': $location.path()});
$window.gtag('event', 'page_view');
});
}
}
Answered By – nesterenes
This Answer collected from stackoverflow, is licensed under cc by-sa 2.5 , cc by-sa 3.0 and cc by-sa 4.0