I found this solution. The errors have disappeared and it would seem to work. I keep testing. For all Transformable attributes, I have set “Transformer” to “NSSecureUnarchiveFromData” in the Data Model Inspector panel. EDIT: After a few days of testing I add something to my previous solution. The previous solution works if, after the changes, … Read more
Swift 5.4.2 This worked for me. EDIT Link to the article is here. Click on the .xcdatamodeld file in the project navigator Click on the Entity that has a Transformable Attribute Click on the Transformable Attribute Click the ‘Show Data Model Inspector’ icon Enter ‘NSSecureUnarchiveFromDataTransformer’ in the Transformer field – EDIT Make this ‘NSSecureUnarchiveFromData’ as … Read more
To recap/Full guide: Before making any change, create a new model version. In Xcode 4: Select your .xcdatamodel -> Editor -> Add Model Version. In Xcode 3: Design -> Data Model -> Add Model Version. You will see that a new .xcdatamodel is created in your .xcdatamodeld folder (which is also created if you have … Read more
I’ve figured out what Apple hints in their documentation. It’s actually very easy but a long way to go before it’s obvious. I’ll illustrate the explanation with an example. The initial situation is this: Data Model Version 1 It’s the model you get when you create a project with the “navigation based app with core … Read more