SwiftUI search with text example

search.swift

import SwiftUI
import Combine

struct SearchView: View {
    @StateObject var observer = SearchTextObserver()
    var body: some View {
        VStack {
            TextField("TextField", text: $observer.searchText)
                .onChange(of: observer.throttleText) { text in
                    print("Call API with \(text)")
                }
        }
        .padding()
    }
}


class SearchTextObserver: ObservableObject {
    @Published private(set) var throttleText = ""
    @Published var searchText = ""

    private var subscriptions = Set<AnyCancellable>()

    init() {
        $searchText
            .throttle(for: .seconds(1), scheduler: DispatchQueue.main, latest: true)
            .sink(receiveValue: { [weak self] t in
                self?.throttleText = t
            })
            .store(in: &subscriptions)
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        SearchView()
    }
}