swift - How to pass NSManagedObjectContext in <Window Controller with Sidebar> Application to Storyboard views?

Question

How can I fetch NSPersistentDocument inside Storyboard views ?. Using: iMac, coreData, Storyboard and Swift

As long as I had only one view, the app was running fine with:

guard let document = self.view.window?.windowController?.document as? NSPersistentDocument,
      let context = document.managedObjectContext else {
    return []
}

... and I have the managedObjectContext by hand.

Then I switched my app to the new style of sideboards:

If I use the same code as above inside my ViewControllers (like DocumentViewController in the screenshot), it fails because document is nil. It is probably a timing issue.. WHERE to place the code , something as viewDidLoad or viewDidAppear.

It would be sufficient enough if I could use a "global variable" for manageObjectContext; set under makeWindowControllers. But I all approaches failed ..

question from:https://stackoverflow.com/questions/65859133/how-to-pass-nsmanagedobjectcontext-in-window-controller-with-sidebar-applicati

Answer 1

Waitting for answers