SWIFTUI unrecognised sector runtime error, saving image data to core data field

Question

Created Nov ’20

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I get this a runtime error

runtime error: Thread 1: "-[Attribute setImageD:]: unrecognized selector sent to instance 0x6000034aabc0"
when running my code. When assigning the field see * * *

Some background, this started in my project so I striped my code to the minimum but still get this error,

CORE DATA DEFINITION

  ______________________________
  extension Attribute {

    @nonobjc public class func fetchRequest() -> NSFetchRequest<Attribute> {
        return NSFetchRequest<Attribute>(entityName: "Attribute")
    }

    @NSManaged public var name: String
    @NSManaged public var order: Int32
    @NSManaged public var item: Item
    @NSManaged public var imageD: Data?

}

  _____________________________

IN THE CALLING CODE I GET THE IMAGE ND CONVERT TO DATA, PASSING IN TO THE SAVING ROUTINE

  let image = UIImage(named: "BartSimpson");
  let imagedata = image?.jpegData(compressionQuality: 1)

    = Attribute.createPhotoAttributeFor(item: item,
                                                  imageData: imagedata!)

            CoreData.stack.save()

_________________________
HERE THE SAVING METHOD GETS A RUNTUME ERROR WHEN TYPING TO SET THE IMAGED FIELD USINNG THE IMAGEDATE... SEE ***

    class func createPhotoAttributeFor(item: Item, imageData: Data) -> Attribute {

        let attribute = Attribute.newAttribute()

        attribute.name = "image"
        attribute.imageD = imageData            // attribute value

* * runtime error: Thread 1: "-[Attribute setImageD:]: unrecognized selector sent to instance 0x6000034aabc0"

        attribute.order = 3                     // 3 = image
        attribute.item = item                   // parent record

        return attribute
    }

WHAT AM I DOING WRONG?

THANKS
MARK

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Answer 1

bigmds OP

Nov ’20

Looking at my own entry here makes me wonder... there seem to be 3 possible error points

1) Is this the right way to get the data representation of an image?

let image = UIImage(named: "BartSimpson");
let imagedata = image?.jpegData(compressionQuality: 1)

2) is this the right way to pass the data to a function?

    = Attribute.createPhotoAttributeFor(item: item,
                                                  imageData: imagedata!)

where

class func createPhotoAttributeFor(item: Item, imageData: Data) -> Attribute {

3) is this the right way to reference the data?

attribute.imageD = imageData            // attribute value

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