Swift core data FetchRequest NSData to UIIMage - swift

Question

Good morning all, I am using Swift "new for me" and core data I am trying to fetch my stored UIIMage from core data the following way. FYI it is saved as Binary Data in core. And I can see the data if I NSLog it. My Fetch Request looks like this. I have NO ERRORS but my image is not showing.
When I save to Core Data the NSLog looks like this..
Did I get to Save Image
2015-10-12 09:05:43.307 Car-Doc-Safe-Plus[13972:3524049] The NewImage has this in it (entity: Documents; id: 0x7fd4c0432060 ; data: {
autoClub = nil;
driverLicense = <89504e47 0d0a1a0a 0000000d 49484452 00000215 00000155 08020000 00d7368a d8000000 01735247 4200aece 1ce90000 001c>;
insuranceID = nil;
noteText = nil;
plate = nil;
registration = nil;
})
But when i Fetch it looks like this..
The Request has this in it (entity: Documents; predicate: ((null)); sortDescriptors: ((null)); type: NSManagedObjectResultType; )
**override func viewDidLoad() {
super.viewDidLoad()
let appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
let context:NSManagedObjectContext = appDel.managedObjectContext!
let request = NSFetchRequest(entityName: "Documents")
request.returnsObjectsAsFaults = false;
let results : NSArray
try! results = context.executeFetchRequest(request)
if results.count > 0 {
let res = results[0] as! NSManagedObject
carImageView.image = res.valueForKey("driverLicense")as? UIImage
}
}**
I know I am missing something but I cannot figure it out. Any help is greatly appreciated.
JZ

Answer 1

The "binary data" type in Core Data is intended for reading and writing NSData objects. Since you want to read/write UIImage, you need to use the "transformable" type. With transformable, Core Data will attempt to use NSCoding to encode/decode the data, converting it to/from NSData as needed (Swift as? will not do this). Since UIImage conforms to NSCoding, you don't need to do any extra work except to tell Core Data to convert the data.