How can I set a Reference field in Firestore Document (NodeJS)

[Ray]

I am trying to set a DocumentReference in a doc from NodeJS(Admin SDK) - like this

const ref = db.doc('foo/someDoc')

await db.doc('bar/newDoc').set({ foo: ref })

 However, it results

 

Error: Argument "data" is not a valid Document. Input object is deeper than 20 levels or contains a cycle.

 Since it's possible on console, I bet there's a way to do it with the sdk, but I can't figure out how. Any idea or document?

[David Negstad]

Looks like there's a _referencePath property on document references you can use.

const ref = db.doc('foo/someDoc')

await db.doc('bar/newDoc').set({ foo: ref._referencePath })

[Sebastian Schmidt]

Hello,

this is an issue in the interactions between the Firestore Node SDK and the Firestore Admin SDK. If you are able to use the Node SDK ("@google-cloud/firestore") directly, then you should be able to save a DocumentReference.

We have committed a fix for this issue (https://github.com/googleapis/nodejs-firestore/pull/29) and are working on a release. I will inform this group when this release is ready.

Thanks,

Sebastian

[Sebastian Schmidt]

Hello,

just to circle back on this - this has been fixed in the Firestore library. You can pull this in by updating the Admin SDK.

- Sebastian