How to create Firestore subcollection using the new WebSDK 9?-CodePudding

Basically all I want to do is create a subcollection in my document, but using the webSDK 9, the tree-shakable SDK.

I've found solutions, but all of them are outdated and use the old sdk.

If this helps, I'm using NextJS and ES6.

CodePudding user response：

You need to use the DocumentReference of the Firestore doc to which you want to add a subcollection, as follows:

const docRef = ....;
const docSubcollectionRef = collection(docRef, 'theSubColl');
await addDoc(docSubcollectionRef, {foo: 'bar'});

More concretely, if you have a doc in the theTempoColl collection with id doc1 (i.e. docRef = doc(db, 'theTempoColl', 'doc1')), the above code will generate a document with the following path: theTempoColl/doc1/theSubColl/{auto_generated_Id}

CodePudding user response：

You can use also setDoc if you define specific document id.

import {db} from './config';
import {setDoc, doc } from '@firebase/firestore'

export default function Page(){
 const createDocWithSpecificId = async () => {
  cosnt docRef = doc(db, 'collection_name', 'specific_id');
  const createDoc = await setDoc(docRef, {foo : 'bar'});
 };
}

Thank you.