Firebase query sort order in swift?

Question

When I load the following Firebase Database data into my tableView, the data is sorted in ascending order by date. How can I order this by descending (show the newest post a

Answer 1

Swift 5: Add reversed() to your objects after sorting by the required field. For example, let's assume you have a day of the month in the "day" field in FireStore. Something like this will do the trick (call loadData() function in viewDidLoad to see the output):

let db = Firestore.firestore()
func loadData() {
        db.collection("FireStoreCollectionName").order(by: "day").getDocuments { (querySnapshot, error) in
            if let e = error {
                print("There was an issue retrieving data from Firestore, \(e)")
            } else {
                for document in querySnapshot!.documents.reversed() {
                    let data = document.data()
                    let fDay = data["day"] as! Int
                    print(fDay)                                       
                }
            }
        }
    }