function add(){
firebase.database().ref("user/l6xetRv3ddhjlerJm10d3aYkF3w1" ).update({
points: "2000"
})
}
I am using this code above to update a specified user points for test but I want to update points of currently logged in user. I tried doing it on function onAuthStateChanged block, but it was unsuccessful. Any suggestions how should I do it?
And is it possible to update previous points adding with current update points? for example:- the previous points of user is 2000, the update function updates 2000 points but i want it to update previous points + current points which is goona be update (2000+2000).
To write the points of the currently sign in user:
const uid = firebase.auth().currentUser.uid;
firebase.database().ref("user").child(uid).update({
points: "2000"
})
To increment/decrement the points of the user, you can use the atomic increment operator:
const uid = firebase.auth().currentUser.uid;
firebase.database().ref("user").child(uid).update({
points: firebase.database.ServerValue.increment(2000);
})
Note that this will only work if you've stored the points as a number though, so:
firebase.database().ref("user").child(uid).update({
points: 2000 // 👈 without quotes
})
And then
firebase.database().ref("user").child(uid).update({
points: firebase.database.ServerValue.increment(2000);
})