We have finished our refactor, and though there were a few bumps along the way, we got through it, and it is already greatly simplifying our inventory list domain. The inventory list view and view model get to handle fewer responsibilities, and we push more domain specific responsibilities to the row view and row view model.

While it’s true that creating child view models is a little gnarly, the benefits from doing so are tremendous. If we wanted to, we could completely split the inventory list domain from the item row domain, putting them in completely separate modules and making it easier to build, test, and run them in isolation.

Don’t forget, but the whole reason we did this refactor was to add new features for editing and duplicating items to the row domain, so now let’s flex these muscles by adding more functionality to the row and show that it does not needlessly bloat the parent domain. We are going to add two more buttons to the row: one for editing the item, and one for duplicating the item. And just to make things interesting we are going to show the edit screen in a modal sheet and the duplicate screen in a popover.