The central feature of my app requires the use of AttributedStrings with multiple custom attributes to store data about various functions related to parts of them. These AttributedString and other data also need to be persisted in SwiftData.
Regarding how to do this, I spoke with an Apple engineer during WWDC24, and he said this was possible with the use of a ValueTransformer. After looking into this, I decided upon this scheme (forward direction shown here): Transform the AttributedString (with its custom attributes) into JSON data and have this interpreted as NSData, which SwiftData can persist.
The value transformer seems to transform the AttributedString to NSData and back without any problems. But any attempts to use this transformer with SwiftData crashes the app.
Your prompt solution to this problem would be greatly appreciated.
Optimalist
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