swiftcore-datansset

CoreData one-to-many relationship. Problem with NSSet attribution

Good afternoon. It's not the first day I've been thinking about this task. I have a one-to-many CoreData table.

enter image description here enter image description here

I was able to link Property to Folders. That is, folders contain many properties. A piece of code at the bottom, how to link the tables

var selectedFolder: Folders?
do {
            arrayPropertys = try context.fetch(Property.fetchRequest())
            arrayPropertys[indexPath.row].parentFolders = selectedFolder
}

On the main screen, I need to show the properties that are in a specific folder that is pressed. The amount I can take:

arrayPropertys[indexPath.row].parentFolders?.propertys!.count

Shows the quantity correctly. For example, there are 5 properties in one folder, and 2 properties in another.

The question is that I can't pull the attributes. There is a Name attribute, but because of the type of the NSSet object, it does not want to be shown.

enter image description here enter image description here

I can't get the values out in any way, I've tried everything, I've read on the Internet. It doesn't work. I can see it and I can't reach it

Solution

  • use (parentFolders?.propertys?.allObjects as? [Property]) to access the objects as an Array<Property>