I have two Model classes: List and ListItem that are related where List is the parent. The ListItem model has 2 objects: name and type.

I have a screen that I want to display items from a specific list grouped by type. Since (as far as my research has shown) SwiftData can't do a simple GROUP BY, I need 6 different variables (one for each type) and then 6 different ForEach statements with the same UI code inside, one for each variable (why? why? but ok).

Where I'm stuck is writing a predicate based on a parent field. I'm passing in the list from the prior View so I tried this:

 @State var list: List

    @Query(filter: #Predicate<ListItem> { item in
        item.list == list && item.type == "Clothing"
    }) var clothing: [ListItem]

The error I get says that list cannot be used on type 'ListView'. Is there a way to filter by the parent related item and an object in the model at the same time?