Passing data in PreviewProvider SwiftUI, ObservableObject class, ObservedObject - swift

Question

I guys, I have a class with some properties (class ReservationInfo). In my first screen (ReservationFormView) I create an instance of the class(myReservationInfo).
I pass the data with a NavigationLink to the second view (ReservationRecapView). It works all right, but I have a problem with the SwiftUI preview. How can I pass some example data to the preview provider?
class ReservationInfo: ObservableObject {
#Published var customerName: String = ""
#Published var surname : String = ""
#Published var nPeople : Int = 1
#Published var date = Date()
}
struct ReservationFormView: View {
#StateObject var myReservationInfo = ReservationInfo()
#State private var showSecondView = false
init() {
UIStepper.appearance().setDecrementImage(UIImage(systemName: "minus"), for: .normal)
UIStepper.appearance().setIncrementImage(UIImage(systemName: "plus"), for: .normal)
}
var body: some View {
NavigationView{
VStack(alignment: .center) {
Text("Little lemon")
.font(.title)
.fontWeight(.bold)
.foregroundColor(Color.gray)
.multilineTextAlignment(.center)
.padding(.bottom, 10.0)
Label("Reservation Form", systemImage: "fork.knife")
.foregroundColor(Color.gray)
.padding(.bottom, 30)
VStack(alignment: .center, spacing: 30.0){
TextField("Type your name", text: $myReservationInfo.customerName, onEditingChanged: {print($0)})
.onChange(of: myReservationInfo.customerName, perform: { newValue in print(newValue)})
.onSubmit {
print("submitted")
}
.underlineTextField()
TextField("Type your surname", text: $myReservationInfo.surname)
.underlineTextField()
HStack(alignment: .center, spacing: 30.0){
Label("\(myReservationInfo.nPeople)", systemImage: "person.fill")
.font(.title2)
Stepper("N di persone", value: $myReservationInfo.nPeople , in: 1...20)
.labelsHidden()
.accentColor(.blue)
}
.padding(.top)
DatePicker(
"Select date",
selection: $myReservationInfo.date,
in: Date.now...,
displayedComponents: [.date, .hourAndMinute]
)
.onChange(of: myReservationInfo.date, perform: {date in print(date)})
.padding(.bottom, 20.0)
}
NavigationLink{
ReservationRecapView(myReservationInfo: myReservationInfo)
} label: {
Text("Avanti")
.padding(.horizontal, 70.0)
}
.padding(.vertical, 10)
.background(Color.blue)
.cornerRadius(10)
.foregroundColor(.white)
}
.padding(.horizontal, 30.0)
.padding(.bottom, 100.0)
.environmentObject(myReservationInfo)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ReservationFormView()
}
}
}
extension Color {
static let darkPink = Color(red: 208 / 255, green: 45 / 255, blue: 208 / 255)
}
extension View {
func underlineTextField() -> some View {
self
.autocorrectionDisabled(true)
.overlay(Rectangle().frame(height: 2).padding(.top, 40))
.foregroundColor(.blue)
}
}
struct ReservationRecapView: View {
#ObservedObject var myReservationInfo : ReservationInfo
var body: some View {
VStack(alignment: .leading, spacing: 10.0){
Text(myReservationInfo.customerName)
Text(myReservationInfo.surname)
Text("Number of people \(myReservationInfo.nPeople)")
Text(myReservationInfo.date, style: .date)
Text(myReservationInfo.date, style: .time)
}.font(.title2)
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ReservationRecapView(myReservationInfo: ReservationInfo())
}
}
I don't know how to pass date in the PreviewProvider