You need to add @Relationship to var students: [Student] in Department model, also:
import Foundation
import SwiftData
@Model
class Department {
...
@Relationship var students: [Student]
...
}
albert.tra
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With CoreData, I'm able to create fetchRequest based on relationship, for example, fetch all items belong to given box
let fetchRequest: NSFetchRequest<Item> = Item.fetchRequest()
fetchRequest.predicate = NSPredicate(format: "box == %@", box)
but it is not possible with Predicate
let predicate = #Predicate<Item> { item in
return item.box == box
}
I wonder, Is there any solution for this?
Thanks so much for your code