delete-user-data should allow for deleting by value

[READ] Step 1: Are you in the right place?

Yes

[REQUIRED] Step 2: Extension name

This feature request is for extension: delete-user-data

What feature would you like to see?

When setting up delete-user-data, it would be great if we could also delete items by a value. In the friendlymarket codelab for example, we store items in the forsale collection. Each item then contains the uid of the user in the seller field. The path here is forsale/{Item UID}/seller

Right now, the extension only allows us to delete items if the UID is part of the path. It would be great if we could also delete items that have a UID as a value.

How would you use it?

In the friendlymarket example, I could delete all items a user is selling when the user wants their account deleted

[Ehesp]

Yeah they’re fair points, so I totally understand where you’re coming from! Let me pick this up with the Firebase team. It will need a bit of planning; off the top of my head I’m not 100% sure that Storage can be queried by file value - it may have to use list which is do-able, however could take a long time on a large storage bucket.

[karayu]

Thanks so much for the feature request Alex! This feature would definitely make this extension a lot more powerful and helpful for GDPR.

In chatting with others, there is quite a bit of complexity in this feature since the relationship between a user and an item can be different. Someone could be helping manage an item’s sale rather than the seller themselves and in that case we would want to delete only if the user who left is a seller and not if they are the marketer.

We’d like to think about this feature request as a separate and more powerful extension. I’m going to close this for now but we’ll be tracking internally as a new extension. Thanks again for the suggestion and using extensions!