CoreData NSDictionary Transformable iOS14 Warning

Question

Shopwave OP

Created Sep ’20

Replies 2

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Views 1.7k

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Im getting a new warning when building for iOS14 with the latest Xcode...

Code Block xcdatamodel: warning: Misconfigured Property: Object.attribute is using a nil or insecure value transformer. Please switch to NSSecureUnarchiveFromDataTransformerName or a custom NSValueTransformer subclass of NSSecureUnarchiveFromDataTransformer

This links to a CoreData parameter, which stores NSDictionary as a Transformable within CoreData. This has been the same for years with no warning, but all of a sudden it has been flagged up. The attribute configuration is...

Code Block Type: Transformable (Optional)
Transformer: Empty
Custom Class: Empty
Module: Empty

It seems like I need to add something to the transformer field, but I cant find any reference to what I should be doing here on behalf of the NSDictionary. I have been looking around for some documentation for this, but nothing has come up so far.

Anyone with any ideas?

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Answer 1

jadardev OP

Sep ’20

Try sticking "NSSecureUnarchiveFromDataTransformerName" into the "Transformer" field of the attribute configuration.

1

Answer 2

Shopwave OP

Oct ’20

I have attempted this already, but the class naming of "NSSecureUnarchiveFromDataTransformerName" doesn't give me confidence that this is going to work. I was expecting to have to provide a class name to describe what is being stored in the Transformable, so like NSDictionary for example.

0

Code Block
Type: Transformable (Optional)
Transformer: Empty
Custom Class: Empty
Module: Empty