child view inside parent view having its own view model as state object

In SwiftUI, when you have a child view inside a parent view and you want the child view to have its own view model as a state object, you can use the concept of @State and @Binding.

In the session titled "SwiftUI essentials," it is explained that each view can have its own state, which acts as a separate source of truth. However, to synchronize the state between a parent and a child view, you can pass a binding to the child view. This allows the child view to update the state in the parent view, ensuring that both views remain in sync.

For example, if you have a rating view that needs to update a value in the parent view, you can pass a binding to the rating view. This way, the parent view's state becomes the single source of truth, and any changes in the child view will reflect in the parent view as well.

For more details, you can refer to the session SwiftUI essentials (12:29) where this concept is discussed.