[RUM][Mobile + Web] Custom attribute's value is being updated about dd-sdk-flutter HOT 9 OPEN

Yes, the behavior you were seeing was expected. Attributes are considered a stateful property of the view, so changing them updates the property in the view. However, we do capture the current state of the global attributes at certain points of the view, it's just RUM will always show you its last known value.

I'm surprised that using the attributes parameter of startView didn't work for iOS -- can you supply some code that reproduces the issue you're seeing? iOS and Android should behave the same.

How you approach this depends on what you're trying to track. Can you give me more information about your use case?

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Hi @toussam,

So I can be clear on what you're expecting -- for a global attribute added through DatadogSdk.instance.rum?.addAttribute, you're expecting a view to have the value of the attribute when it started, even if that attribute is changed during the life of the view?

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Hi @fuzzybinary,

This is indeed the behavior that I was expecting / trying to reach.

Now that you're referring the view's lifecyle, it does make sense. So I presume that the only way to do so would be to set up the custom method for each event using the startView method's third parameter (attributes), am I right?

If so, I did tried this solution and it worked for Android, but sadly not for iOS. I just tested back and I can confirm you that the custom attribute's value is still being updated for the view event.

Also, using this solution, I noticed the #565 issue for the Web.

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@toussam Following up on this -- The original bug is as designed, but I'd still like to make sure startView is working as expected on iOS. Do you have an example of it not working as expected?

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