Generic enum Menu SwiftUI - swift

Question

I'm trying to create a View struct in SwiftUI for a menu view like the code below. I'm getting an error though with "Failed to produce diagnostic for expression; please submit a bug report". I don't understand what I'm doing wrong.
To be clear, I would like to create a struct where I can just input an enum, a text string and an action for the button, and get back a Menu, to make the contentview more readable.
Hope you guys can help me. Cheers.
struct AddObjectMenuView<T: RawRepresentable, CaseIterable>: View {
let labelText: String
let someEnum: T
let function: () -> Void
var body: some View { // Getting error here
Menu {
ForEach(someEnum.allCases) { field in
Button(action: function) {
VStack {
Text(field.rawValue).padding()
}
}
}
} label: {
Text(labelText).padding().background(RoundedRectangle(cornerRadius: 10).foregroundColor(.clear))
}
.foregroundColor(Color("lightBlue"))
}
}
And then use it in my ContentView like this :
AddObjectMenuView(labelText: "Hello", someEnum: SomeEnum, function: {
// Do something
})

Answer 1

You need to work with type of generics type to use .allCases.
Here is fixed variant (modified parts are highlighted inline). Tested with Xcode 13.2 / iOS 15.2
struct AddObjectMenuView<T: CaseIterable & Hashable> : View where T.AllCases: RandomAccessCollection {
let labelText: String
let someEnum: T.Type // << here !!
let function: () -> Void
var body: some View {
Menu {
ForEach(someEnum.allCases, id: \.self) { field in // << here !!
Button(action: function) {
VStack {
Text(String(describing: field)).padding() // << here !!
}
}
}
} label: {
Text(labelText).padding().background(RoundedRectangle(cornerRadius: 10).foregroundColor(.clear))
}
.foregroundColor(Color("lightBlue"))
}
}
of course enums should be confirmed correspondingly.
And usage like
AddObjectMenuView(labelText: "Hello", someEnum: SomeEnum.self, function: {
// Do something
})