topic Re: persistProperties with empty dataview in Developer

persistProperties with empty dataview

danieleperilli — Tue, 25 May 2021 11:08:15 GMT

I noticed strange behavior when the new "empty dataview" feature is enabled.

It appears that calling the host.persistProperties method when there is no data associated with a visual doesn't trigger any update/refresh (and the passed properties are not saved). Is it intentional or is it a bug?

Re: persistProperties with empty dataview

Anonymous — Thu, 27 May 2021 01:54:25 GMT

Hi @danieleperilli,

I suppose it may be triggered by visual render and initialize if that feature takes the same logic as visuals initializations.

You can also take a look at following document about power bi visual concepts if helps:

Power BI visuals concepts - Power BI | Microsoft Docs

Regards,

Xiaoxin Sheng

Re: persistProperties with empty dataview

danieleperilli — Thu, 27 May 2021 03:52:36 GMT

I'm sorry, I don't understand your answer.

If there is no data associated with the visual (and the visual now supports it thanks to the "supportsEmptyDataView" flag) and you call host.persistProperties (...), the visual does not save the passed data as usual. With regular data binding, persistProperties saves the passed properties and triggers the Update event, without data this does not happen.

Re: persistProperties with empty dataview

Anonymous — Fri, 28 May 2021 07:48:49 GMT

Hi @danieleperilli,

So you mean this issue appears when you enable the flag? If that is the case, perhaps you can try to contact to power bi custom visual team to report this scenario.

Regards,

Xiaoxin Sheng

Re: persistProperties with empty dataview

danieleperilli — Fri, 28 May 2021 07:53:36 GMT

Ok, thanks. I will contact them directly.

Re: persistProperties with empty dataview

Balogh1Bence — Tue, 05 Oct 2021 07:09:51 GMT

Have you received any useful information from the powerbi custom visual team?

Re: persistProperties with empty dataview

danieleperilli — Tue, 05 Oct 2021 07:22:30 GMT

Sort of 🙂 They said it is expected behavior, but they will fix it. No ETA was provided, unfortunately.