Need help adding name to qrcode so i can save to parse - parse-platform

Question

I cannot figure out why im getting this error.
This is the function to update a guest(Participant). I'm trying to save the Qr code i created to a PFFile and save to parse.
func update() {
_ = LabelText
let query = PFQuery(className: "Participant")
query.getObjectInBackgroundWithId(LabelText) {
(Update: PFObject?, error: NSError?) -> Void in
Update!["firstname"] = self.firstnameTF!.text
Update!["lastname"] = self.lastnameTF!.text
Update!["grade"] = self.gradeTF!.text
Update!["teacher"] = self.teacherTF.text
Update!["email"] = self.emailTF.text
Update!["phone"] = self.phoneTF.text
Update!["transportation"] = self.transportationTF.text
Update!.saveInBackground()
print("updated")
if self.QrImage == nil {
print("Image is Blank")
return
}else{
//Image is not blank
let imageData = UIImageJPEGRepresentation(self.QrImage!, 1)
let parseImageFile = PFFile(data: imageData!)
Update!.setObject(parseImageFile!, forKey: "qrcode")
Update!.saveInBackgroundWithBlock( {
(success: Bool , error: NSError?) -> Void in
})
}
self.dismissViewControllerAnimated(true, completion: {});
}
}
I can see the image in the self.QrImage field and i only get the error on:
let parseImageFile = PFFile(data: imageData!)
Why am i getting a nil error when it should have a value there?
Edit 1:
let imageData = UIImagePNGRepresentation(self.QrImage!)
let parseImageFile = PFFile(data: imageData!)
Update!.setObject(parseImageFile!, forKey: "qrcode")
Update!.saveInBackgroundWithBlock( {
(success: Bool , error: NSError?) -> Void in
})
}
Same result."fatal error: unexpectedly found nil while unwrapping an Optional value"
Edit 2:
So it seems there must be a name value associated with the image before you upload it to parse. My Image is of a Qrcode i create from other data. here's my code:
func displayQrCode() {
print(self.qrdata.text)
let data = self.qrdata.text!.dataUsingEncoding(NSISOLatin1StringEncoding)
let filter = CIFilter(name: "CIQRCodeGenerator")
filter!.setValue(data, forKey: "inputMessage")
filter!.setValue("Q", forKey: "inputCorrectionLevel")
self.qrcodeImage = filter!.outputImage!
let scaleX = qrCode.frame.size.width / qrcodeImage!.extent.size.width
let scaleY = qrCode.frame.size.height / qrcodeImage!.extent.size.height
let transformedImage = qrcodeImage!.imageByApplyingTransform(CGAffineTransformMakeScale(scaleX, scaleY))
self.qrCode.image = UIImage(CIImage: transformedImage)
print("QRCode Made")
}
now i guess i need to add a name to the self.qrCode.image?

Answer 1

This is what needs to be done before you use UIImagePNGRepresentation:
self.QrImage = UIImage(named: "qrcode.png")