SwiftData CloudKit integration requires that all attributes be optional, or have a default value set

Question

haozes OP

Created Aug ’23

Replies 5

Boosts 3

Views 1.6k

Participants 5

After install XCode 15 beta 6:

@Model
class WordResult {
    var text = ""
    var translation:[String] = []

      init(){

      }
}

got this error:

Variable 'self._$backingData' used before being initialized

so I changed to :

@Model
class WordResult {
    var text:String
    var translation:[String]

    
    init(){
        self.text = ""
        self.translation = []
    }
}

Then got this:

CloudKit integration requires that all attributes be optional, or have a default value set

It seems it can not work with cloudkit now.

Answered by BabyJ in 762576022

According to the Xcode 15 Beta 7 Release Notes:

SwiftData

Resolved Issues

Fixed: @Model classes with initial values for stored properties result in an error that self._$backingData is used before being initialized. (113572344)

New builds with the new Xcode beta should not run into those issues.

Boost

Answer 1

Nikolaj.jsj OP

Aug ’23

The same issue as this post: https://developer.apple.com/forums/thread/735342

But yes a few people have the same issue, myself included...

0

Answer 2

SpaceGelato OP

Aug ’23

Thanx, very helpful

0

Answer 3

skillbane OP

Aug ’23

Same for me. It seems everything needs to be optional now, and not have a default value, which makes for uglier code. But

var text:String?
var translation:[String]?

Should work fine for you

0

Answer 4

BabyJ OP

Aug ’23

Accepted Answer

According to the Xcode 15 Beta 7 Release Notes:

SwiftData

Resolved Issues

Fixed: @Model classes with initial values for stored properties result in an error that self._$backingData is used before being initialized. (113572344)

New builds with the new Xcode beta should not run into those issues.

1

Answer 5

haozes OP

Aug ’23

It's fixed in Xcode 15.0 beta 7!!

0