如何在coreData的谓词中使用AppStorage

Question

我试图在CoreData的谓词中使用AppStore的值。

struct MyView: View {
    @AppStorage("valueFilter") private var valueFilter = ""
    @Environment(\.managedObjectContext) var moc
    @FetchRequest(
        entity: Value.entity(),
        sortDescriptors: [],
        predicate: NSPredicate(format: "value_filter == %@", valueFilter) // report error in this line.
    ) var values: FetchedResults<Value>
    ...
}

但是它在谓词行中报告Cannot use instance member 'valueFilter' within property initializer; property initializers run before 'self' is available。