How does one declare a TableColumn with a nullable field?
I have a Book model with several nullable fields:
struct Book: Codable, Equatable, Identifiable {
// ...
let productURL: String?
// ...
}
This is how I'm trying define the corresponding TableColumn:
TableColumn("Product URL", value: \.productURL) { book in
Text(String(book.productURL ?? ""))
}
Though this results in several errors:
Referencing initializer 'init(_:value:comparator:content:)' on 'TableColumn' requires that 'Book' inherit from 'NSObject'
Referencing initializer 'init(_:value:comparator:content:)' on 'TableColumn' requires that 'Book' inherit from 'NSObject'
Referencing initializer 'init(_:value:comparator:content:)' on 'TableColumn' requires the types 'KeyPathComparator' and 'SortDescriptor' be equivalent
Referencing initializer 'init(_:value:comparator:content:)' on 'TableColumn' requires the types 'KeyPathComparator' and 'SortDescriptor' be equivalent
Other, non-nullable columns work just fine. For example:
TableColumn("ID", value: \.id) { book in
Text(String(book.id))
}
TableColumn("Slug", value: \.slug)
TableColumn("Category", value: \.category)
TableColumn("Title", value: \.title)
// ...
[Code-Along] SwiftUI on the Mac: The finishing touches
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