I’m playing around with login functionality in my app and I’ve noticed that when a user logs out and then in again the views display data from the previous session. It doesn’t matter if the second user is a different user, it still happens.

How can I deallocate or otherwise reset my views when a user logs out?

A simplified example of my app.

@main
struct MyApp: App {
    @StateObject private var authModel = AuthModel()

    var body: some Scene {
        WindowGroup {
            if authModel.isAuthenticated && authModel.hasFreshData {
                ContentView().environmentObject(authModel)
            } else {
                LoginView().environmentObject(authModel)
            }
        }
    }
}

struct ContentView: View {
    var body: some View {
        TabView {
            HomeView().tabItem { Label("Home", systemImage: "house") }

            SearchView().tabItem { Label("Search", systemImage: "magnifyingglass") }

            WebView().tabItem { Label("Old", systemImage: "globe" }
        }
    }
}

struct SearchView: View {
    @State private var searchText = ""
    @State private var data = [data]()

    var body: some View {
        NavigationStack {
            List {
                ForEach(data) { dat in
                    Text("(dat.value)")
                }
            }
            .searchable(text: $searchText)
            .onSubmit(of: .search, runSearch)
        }
    }

    func runSearch() {
        Task {
            data = await HTTPClient.runSearch(searchText)
        }
    }
}

struct WebView: UIViewRepresentable {
    var url: URL
    var webView: WKWebView

    func makeUIView(context: Context) -> WKWebView {
        webView = WKWebView()
        return webView
    }

    func updateUIView(_ webView: WKWebView, context: Context) {
        let request = URLRequest(url: url)
        webView.load(request)
    }
}

class AuthModel: ObservableObject {
    @Published var isAuthenticated = false
    @Published var hasFreshData = false

    init() {
        Task {
            await self.loadAuthState()
        }
    }

    func login() async {
        // Perform login request. It requires loading config and returns a complex object that contains the refresh and access token, but I don't think it's relevant for the question
        isAuthenticated = true

        // Save auth state
    }

    func fetchFreshData() asyn {
        // Need to fetch some data and make sure there is a session on the server. The implementation shouldn't be relevant for this question
        hasFreshData = true
    }

    func loadAuthState() async {
        // Load the auth state
        isAuthenticated = true
        await fetchFreshData()
        hasFreshData = true
    }
}

The SearchView uses the searchable(text:placement:prompt:) modifier. If there is text typed into the search box it is visible when a user logs out and (a different user) logs in.