I have the following test data
1: {
match: "Game 1",
scorer: ["foo","bar"] //this could also be an object
}
My question is how do I correctly append new value to an array without overwriting it? My idea was to retrieve existing data then spread it like so [...currentData, "bob"]. Is there a better alternative?
const addScorer = (matchId) => {
return update(ref(db, path), {
scorer: ["bob"]
})
}
There is no atomic operation to add an item to an array directly in the database. This means you'll need to:
This is one of the many reasons why Firebase recommends against using arrays for lists of data, but instead has a push() operation that circumvents most problems. For more on this, see the link to the document that Nilesh included in their comment, or read this article on Best Practices: Arrays in Firebase.