SwiftUI access passed view data in sctruct header - view

Question

How can I pass data to a view and use it directly in the "header"? All tutorials I made are accessing the data in the view body - which works fine - but I want to call a graphlql method from the UpdateAccountView and than render a view based on the result.
My class for passing data:
class Account {
var tel: Int
init(tel: Int) {
self.tel = tel
}
}
My main view where the class is initialised (simplified - normally the "tel" will come from an input)
struct ContentView: View {
var account: Account = Account(tel: 123)
var body: some View {
NavigationView {
NavigationLink(
destination: UpdateAccountView(account: account),
label: {
Text("Navigate")
})
}
}
}
The view I call to do the request and call the next view based on the result
UpdateAccount is taking tel:Int as a parameter.
And here is the problem. I cannot access account.tel from the passed data.
struct UpdateAccountView: View {
var account: Account
#ObservedObject private var updateAccount: UpdateAccount = UpdateAccount(tel: account.tel)
#ViewBuilder
var body: some View {
if updateAccount.success {
AccountVerifyView()
} else {
ContentView()
}
}
}
The error:
Cannot use instance member 'account' within property initializer; property initializers run before 'self' is available
Update method (GraphQL):
class UpdateAccount: ObservableObject {
#Published var success: Bool
init(tel: Int){
self.success = false
update(tel: tel)
}
func update(tel: Int){
Network.shared.apollo.perform(mutation: UpdateAccountMutation(tel: tel)) { result in
switch result {
case .success(let graphQLResult):
self.success = graphQLResult.data!.updateAccount.success
case .failure(let error):
print("Failure! Error: \(error)")
self.success = false
}
}
}
I saw that there is an EnvironmentObject but than the variable become available globally as far as I understood, which is not necessary here.
Thank you for your help.

Answer 1

You can make it in explicit init, like
struct UpdateAccountView: View {
var account: Account
#ObservedObject private var updateAccount: UpdateAccount // << declare
init(account: Account) {
self.account = account
self.updateAccount = UpdateAccount(tel: account.tel) // << here !!
}
// ... other code
}