How to avoid a trail of delegate calls in a navigation stack?

Question

I've search result on View A. I've a filter options on search result. When suer clicks on filter view A it takes him to view B which lists all the filter options. Clicking on filters on B will take user to View C which shows selection for each filter. When user selects filters on view C I want to pass it back to A so that when user goes back to view A, after selecting filters, result data on A is updated after applying selected filter.

How to do that in any other simplest way possible?

Answer 1

There are many ways. I will share the easiest. Create a modal struct, update its value from view controller C and then use it in A.

 struct StudentData { 
    static var name = ""
    static var address = ""
 }

In View Controller C, update the values

StudentData.name = "your name" 
StudentData.address = "your address"

In View Controller A,

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(true)
    nameField.text = StudentData.name
    addressField.text = StudentData.address
}