0
230
Viewshow to add an object to a document in firebase
In my code, I get an object from an existing Firebase collection and then I want to add it to another document as an object, however I don't understand how to do it
// Create a query against the collection.
const q = query(subjectRef, where("Subject", "==", subject), where("Board", "==", examBoard), where("Level", "==", level));
onSnapshot(q, (snapshot) => {
snapshot.docs.forEach(doc => {
//add a document to a subcollection in the collection users
const auth = getAuth();
//editted so onAuthState function is not called
const uid = auth.currentUser.uid
const docRef = doc(db, "users", uid);
const colRef = collection(docRef, "subjects");
addDoc(colRef, {
//?????
});
})
the doc would be added to the collection subjects, this is what the doc looks like:
and the structure of the users is (collection) users > (document) user > (collection) subjects > (document) what i want to add
·
Juan Pablo Isaza
1 answers
Answer question0
You can get the user ID from auth.currentUser.uid property. Here's how you would achieve this:
const q = query(subjectRef, where("Subject", "==", subject), where("Board", "==", examBoard), where("Level", "==", level));
onSnapshot(q, (snapshot) => {
snapshot.docs.forEach(doc => {
//add a document to a subcollection in the collection users
const auth = getAuth();
var q = doc.data()
const colRef = collection(db, "users", auth.currentUser.uid,"subjects");
addDoc(colRef, {
Board:q.Board
Level:q.Level
Subject:q.Subject
});
});
·
Juan Pablo Isaza
Report
Answer question