Swift core data change bool stored - swift

Question

I am making and expanding an app for lists and adding extra data as I go. I have added a bool to mark the item as completed.
I want to change the value of a bool stored in core data. I can add and delete orders but now I'm looking to change properties. Please can I have help on the best way to change these?
I have made a func changeCompleated, but can't work out how to get it to work in my core data manager.
class CoreDataManager {
static let shared = CoreDataManager(moc: NSManagedObjectContext.current)
var moc: NSManagedObjectContext
private init(moc: NSManagedObjectContext) {
self.moc = moc
}
private func fetchOrder(name: String) -> Order? {
var orders = [Order]()
let request: NSFetchRequest<Order> = Order.fetchRequest()
request.predicate = NSPredicate(format: "name == %#", name)
do {
orders = try self.moc.fetch(request)
} catch let error as NSError {
print(error)
}
return orders.first
}
func changeCompleated(name:String, completed: Bool) {
do {
if let order = fetchOrder(name: name) {
self.moc.perform {
}
try self.moc.save()
}
} catch let error as NSError {
print(error)
}
}
func deleteOrder(name: String) {
do {
if let order = fetchOrder(name: name) {
self.moc.delete(order)
try self.moc.save()
}
} catch let error as NSError {
print(error)
}
}
func getAllOrders() -> [Order] {
var orders = [Order]()
let orderRequest: NSFetchRequest<Order> = Order.fetchRequest()
do {
orders = try self.moc.fetch(orderRequest)
} catch let error as NSError {
print(error)
}
return orders
}
func saveOrder(id: UUID, name: String, type: String, qty: Double, urgent: Bool, complete: Bool) {
let order = Order(context: self.moc)
order.id = id
order.name = name
order.type = type
order.qty = qty
order.urgent = urgent
order.complete = complete
do {
try self.moc.save()
} catch let error as NSError {
print(error)
}
}
}

Answer 1

Almost, just add a line to change the value, the perform block is not needed
func changeCompleated(name: String, completed: Bool) {
guard let order = fetchOrder(name: name) else { return }
do {
order.complete = completed
try self.moc.save()
} catch {
print(error)
}
}
And you can also shorten fetchOrder
private func fetchOrder(name: String) -> Order? {
let request: NSFetchRequest<Order> = Order.fetchRequest()
request.predicate = NSPredicate(format: "name == %#", name)
do {
return try self.moc.fetch(request).first
} catch {
print(error)
}
}