WebSDK - Data Object does not exist unless we set at least 1 thing in Update Variables

Question

Hi,

I'm currently working on a migration from Tags to Event Forwarding.

I'm using Data Object instead of XDM as the client has an existing data layer and huge website and would like to avoid doing mapping in the report suite and Journey Analytics is in their future.

In my WebSDK Extension I'm using the On Before Send Event Callback Code to set my "global" variables, just how we would with doPlugins in the old AA extension.

I have a page load rule that fires a "Web Webpagedetails Page Views".

I have noticed that content.data is not defined in my CallBack Code if in my page load rule I do not add the action Update Variables and set at least one evar, prop, etc.

This seems like an unneeded extra step for a rule as some rules do not need to send extra evars etc, they just need to pass the "global" ones.

Has anyone found a work around for this, other than adding Update Variables to each rule?

Thanks!

bjoern__koth · Accepted Answer

Guess that's just how the devs implemented it. But at least they give you the commented lines to get started easily.
What I typically do (coming from a classic analytics with AppMeasurement background and an "s" object) is

let s = content.__adobe.analytics.

this will let you work with the s object as you may have been used to.

Also, it has become so much better, you won't need to set any of

s.linkTrackEvents and

s.linkTrackVars

anymore.

bjoern__koth · Answer

Hi @paulbr15

well, typically the payload should be a lean as possible and anything that is not needed is left out to improve the execution speed.

If you do not specify payload data, the WebSDK assumes there is no free form data that you want to send and keeps it empty.

This should not keep you from defining it your self in the onBeforeEventSend though.

Best practce should anyway always be checking if the object structure you want to add payload to exists.

So, add this at the beginning of your callback and it should be fine.

content.data = content.data || {};

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