How to get localized validation messages?

[jonsaw]

I'm trying to setup a multilingual app with Localizable.strings. So far, the UI elements in SwiftUI all translate as expected. How do we get the validation messages to translate accordingly?

[jonsaw]

Got it to work (with extra steps).

extension LocalizedStringKey {
    var stringKey: String {
        let description = "\(self)"
        
        let components = description.components(separatedBy: "key: \"")
            .map { $0.components(separatedBy: "\",") }
        
        return components[1][0]
    }
    
    func stringValue(locale: Locale = .current) -> String {
        return .localizedString(for: self.stringKey, locale: locale)
    }
}

struct LoginView: View {
    @Environment(\.locale) var locale: Locale

    func trValidationMessage(_ message: String) -> some View {
        let localeMessage = LocalizedStringKey(message).stringValue(locale: locale)
        return Text(localeMessage).foregroundColor(Color.red).font(.caption)
    }

    var body: some View {
        TextField("Email", text: $viewModel.email)
            .validation(viewModel.emailValidation) { message in
                trValidationMessage(message)
            }
    }
}

[jonsaw]

With iOS 16, managed to get it to work simply by using String(localized:)

let emailLabel = String(localized: "Email")
let errorMessage = String(localized: "Valid \(emailLabel) required")