Is there a possibility to set up a dependency on a Tag?

[kay_lehmann]

Hi There

I want to make sure a specific Tag only gets executed after another Tag already is.

Greetings

[craig_rouse · Accepted solution]

Hi @kay_lehmann,

Good to see you active on the community :-)

There isn't a built-in feature to do this, but you can achieve it by using a JavaScript extension.

Example scenario: you want to fire a tag (UID 23 in IQ) first and then fire another one (UID 49) when this has completed.

Steps:

1. Create a JS extension scoped to tag 23 with the following contents:

window.utag_post_send_q = window.utag_post_send_q || [];
window.utag_post_send_q.push({event:a, data:b, uids:['49']});

2. Create a second JS extension scoped to "All Tags", but change the execution order drop-down to "After Tags". This will then run after all tags have completed. The contents of this extension should be:

// declared for later use
var evt_obj;
// take items from the front of the queue and fire a utag.track call for each one
while (evt_obj = window.utag_post_send_q.shift()) {
// utag.track accepts: event type (view/link), data object, object containing: callback function (null if not required), array of tag UIDs 
utag.track(evt_obj.event, evt_obj.data, {cb:null, uids:evt_obj.uids});
}

Now, tag #23 will run when the page loads, and as soon as all tags have finished sending, tag #49 will load, with the data that was originally passed to tag #23.

Please be aware that this solution is untested, but it should work. It's recommended to have the latest utag version to use this, but v4.36 is the minimum.

[kay_lehmann]

Thank you very much.

copy'n'paste and after updating the utag.loader the code worked as intended!

Greetings