Recursive State

[mstfy]

It is fairly common to have one view pushes same view to navigation stack. For example A ProductDetailView can contain similar products section. And tapping a product in similar products sections pushes a new ProductDetailView to navigation view. It is easy to implement it in vanillia SwiftUI. Just create a new instance and give it to destination of NavigationLink.

But I am having struggle to achieve same thing in TCA. I need to embed the child view's state to parent view's state in order to trigger navigation. This is the ProductDetailState:

struct ProductDetailState: Equatable {
    var isNavigationActive = false
    var similarProducts: [Product] = []
    var similarProductState: ProductDetailState?
}

But because it is struct and structs can not recursively contain their instances I get compile error. I tried to convert state to final class but this time views didn't update.

Am I missing something? How can achieve this in TCA?

[RabugenTom]

There is an example about recursion in the case studies. Maybe it'll help.

[ChaseStas]

Here is an example with two states

[stephencelis]

Going to convert this to a discussion, but the examples above should help 🙂