Firestore expressjs：如何获取特定字段存在的文档并更新文档

Question

So I am using expressjs in the firebase cloud function trying to get a document where a specific field is the same as a value that I already have, So here is the piece of code:

const email =data.email (this is coming from stripe webhook ) 
  const document = db
        .collection('ConnectedAccounts')
        .where(`email`, '==', email)
        .get();
      console.log('document', document.data());

after getting this document I want to store a new field to it, I have tried the above code but failed, can anyone help?

Answer 1

When you execute a query the response is a QuerySnapshot that can contain any number of documents. So you need to loop over the documents in that snapshot to get at the individual results:

const email =data.email (this is coming from stripe webhook ) 
const querySnapshot = await db
      .collection('ConnectedAccounts')
      .where(`email`, '==', email)
      .get();
querySnapshot.docs.forEach((docSnapshot) => {
  docSnapshot.ref.update({ ... your update here ...});
})