Realm accessed from incorrect thread - Swift 3

Question

At the top of my UITableViewController is the following:

let queue = DispatchQueue(label: \"background\")

When a task is dele

Answer 1

You could also use a ThreadSafe reference, a specific way to pass realm objects between threads:

let realm = try! Realm()
let person = Person(name: "Jane") // no primary key required 
try! realm.write {
    realm.add(person)
}
let personRef = ThreadSafeReference(to: person)
DispatchQueue(label: "com.example.myApp.bg").async {
    let realm = try! Realm()
    guard let person = realm.resolve(personRef) else {
    return // person was deleted
}
try! realm.write {
    person.name = "Jane Doe"
}

The steps provided by Realm Documentation:

1. Initialize a ThreadSafeReference with the thread-confined object.
2. Pass that ThreadSafeReference to a destination thread or queue.
3. Resolve this reference on the target Realm by calling Realm.resolve(_:).
4. Use the returned object as you normally would.