Is it somehow possible to pass the initial postStream json object into the GTM datalayer?

dev
1

Is it somehow possible to pass the initial post stream object for topic pages to the GTM data layer without doing another ajax request like I do right now as a bad workaround?

<script type="text/discourse-plugin" version="0.8">
const currentUser = api.getCurrentUser();
let userId;

if (currentUser) {
    userId = currentUser.id;
}
else
{
    userId = 0;
}

var getJSON = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
};

api.onPageChange((url, title) => {
    if (url.match(/^\/t\//)) {

	    getJSON(url + '.json',
        function(err, data) {
          if (err !== null) {
              
            window.dataLayer.push({
                'event': 'pageChangeData',
                'userId': userId,
                'PageType': 'topic',
                'PageJson': false
            });
            
          } else {
        
            window.dataLayer.push({
                'event': 'pageChangeData',
                'userId': userId,
                'PageType': 'topic',
                'PageJson': data
            });
          }
          
        });
	    
	} else {
	    
	        window.dataLayer.push({
                'event': 'pageChangeData',
                'userId': userId,
                'PageType': 'notopic',
                'PageJson': false
            });
	}

});
</script>
2

If you’re trying to send the data that is associated with a Discourse event, you might be able to use the approach that’s outlined in this post: Setup Google Tag Manager for Analytics.

It should work if you’re trying to catch any of the following events:

  • post:created
  • topic-notifications-button:changed
  • topic:created
  • page:bookmark-post-toggled
  • page:like-toggled
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