How to increment a record in Firebase?

Question

I have a Firebase record \"searches: 0\" for each user. On some event, I\'d like to add 1 to what the current count is. I\'ve gotten this far, but for some reason, it\'s not

Answer 1

For the Realtime Database the use of transaction seems to be the best way to do it. See the answer from Sunday G Akinsete

From his answer and the related comments:

firebase
    .database()
    .ref('users')
    .child(user_uid)
    .child('searches')
    .transaction(function(searches) {
        return (searches || 0) + 1
    })

For the Firestore Database you can use the Firebase Sentinel values to increment/decrement a value that without having to fetch it first

Increment

firebase
    .firestore()
    .collection('users')
    .doc('some-user')
    .update({ 
         valueToIncrement: firebase.firestore.FieldValue.increment(1) 
    })

Decrement

firebase
    .firestore()
    .collection('users')
    .doc('some-user')
    .update({ 
        valueToDecrement: firebase.firestore.FieldValue.increment(-1) 
    })

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