delete collection firebase in v9-CodePudding

can some one explain how can i delete collection in firebase/firestore using v9 using reactjs

firestore()
  .collection('rate')
   .get()
  .then((querySnapshot) => {
  querySnapshot.forEach((doc) => {
    doc.ref.delete();
  });

this code i am using in v8 i need same thing in v9

 const q = query(collection(db, `${udata.id}`));
    const querySnapshot = await getDocs(q);
    querySnapshot.forEach((doc) => {
      // doc.data() is never undefined for query doc snapshots
      console.log(doc.data());
      
    });

already try this but this code only read data this can't allow me to delete so can some one tell me how to do it

CodePudding user response：

You can use deleteDoc(), as documented here.

deleteDoc() takes a document reference, so you'll need to pass the reference from inside the forEach. In the forEach you're receiving a QueryDocumentSnapshot, so you just need to add a

deleteDoc(doc.ref);

CodePudding user response：

There's a top-level function deleteDoc() to delete documents in using Modular SDK:

import { collection, query, getDocs, deleteDoc } from 'firebase/firestore';

const q = query(collection(db, `${udata.id}`));
const querySnapshot = await getDocs(q);
    
const deleteOps = [];

querySnapshot.forEach((doc) => {
  deleteOps.push(deleteDoc(doc.ref));      
});

Promise.all(deleteOps).then(() => console.log('documents deleted'))