[Vuejs]-Using firebase .update within a .where (instead of .doc)

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2👍

✅

You’re almost there. You can’t update the data of DocumentSnapshot though, since that is the in-memory representation of the document data. Instead you need to get the DocumentReference and call update on that.

doc.ref.update({
  postedProjects: firebase.firestore.FieldValue.arrayUnion("new project")
})
👤Frank van Puffelen

2👍

You need a DocumentReference in order to update() a document. Nothing else will work.

In your code, doc is a QueryDocumentSnapshot type object. If you want the DocumentReference object that refers to the document from that snapshot, use its ref property.

doc.ref.update({
    postedProjects: firebase.firestore.FieldValue.arrayUnion("new project")
})
👤Doug Stevenson

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