Hey @marekbrze, thanks for the contribution!

Were you able to test and verify this locally?

From what I gather – this shouldn't work as Sanity will only accept a set of whitelisted props in assetDocumentProps when calling props.onSelect.

Any other custom props (user in this case) will be omitted when props.onSelect is called (and when the image is subsequently uploaded). This is probably in place to ensure that users aren't uploading images to Sanity with huge custom payloads.

Hi, sorry I didn't check it that well. I assume that the only available option is to change what's in creditLine or ask Sanity to add "author" field to store at least the author full name.

No problem! Let's keep the issue open as it's still very much a reasonable ask.

I'll raise the possibility of custom asset sources being able to store more props with the team.