Update core data object swift 3

Question

I want to update a core data object in swift 3. After some googled I didn\'t found anything about swift 3. So my question is: how can I update a core data object in swift 3?

Answer 1

Pass unique id in variable "id"(Unique variable created in Core data model) and all the variable as you want to update values:

func context() ->  NSManagedObjectContext {
    let context=(UIApplication.shared.delegate as!AppDelegate).persistentContainer.viewContext
        return context
}



func save() {
    (UIApplication.shared.delegate as! AppDelegate).saveContext()
}

func UpdateCartByTestId(id:Int64,name:String) {
    let fetchRequest =
            NSFetchRequest(entityName: "Update")
    fetchRequest.returnsObjectsAsFaults = false
    fetchRequest.predicate = NSPredicate(format:"id == %d",id)

    let result = try? context().fetch(fetchRequest)

    if result?.count == 1 {

        let dic = result![0]
        dic.setValue(id, forKey: "id")
        dic.setValue(name, forKey: "name")
        save()
    }
}