Firestore - How to get document id after adding a document to a collection

Question

Is there a way to acquire the document id that was generated after adding a document to a collection?

If I add a document to a collection that represents a \"post\"

Answer 1

If you want to use async/await instead of .then(), you can write it like this:

const post = async (doc) => {
    const doc_ref = await db.collection(my_collection).add(doc)
    return doc_ref.id
}

If you want to catch any errors in this function, include .catch():

    const doc_ref = await db.collection(my_collection).add(doc).catch(err => { ... })

or you can have the calling function catch the error.