SwiftData does not cascade delete

Not working for me neighter, SwiftData do not cascade delete relationships.

I also has the same issue.... did you got any solution??

Also not working for me..."child" objects are not being deleted when using the .cascade option. Could someone be abe to assist?

I'm using SwiftData with CloudKit enabled. Here's a simplified version of my model, where Score objects are not being deleted upon deletion of Match objects :

import SwiftData

@Model
class Match {
    // CloudKit integration requires all relationship properties to be optional
    @Relationship(deleteRule: .cascade, inverse:\Score.match) var score: Score?

    init() {
        self.score = Score(
            startServing: true,
            decidingSetType: .regular
        )
    }

}

@Model
class Score {
    // CloudKit integration requires all relationship properties to be optional
    var match: Match?
    // CloudKit integration requires all non optional properties to have a default value
    let startServing: Bool = true
    let decidingSetType: DecidingSetType = DecidingSetType.regular

    init(
        startServing: Bool,
        decidingSetType: DecidingSetType
    ) {
        self.startServing = startServing
        self.decidingSetType = decidingSetType
    }
}

enum DecidingSetType: Codable {
    case regular
    case superTiebreak
}

It seems I also have the same issue.. Hope this fixes. I also found a StackOverflow post mentioning the issue: https://stackoverflow.com/questions/77559646/swiftdata-cascade-deletion-rule-not-working

I have the same problem, but I've seen it working before:

https://youtu.be/dAMFgq4tDPM?si=JPFuB42gHN0sl7zK&t=1432

I found out that explicitly saving the modelContext prevents the cascade deleteRule to work. I filled a Feedback report : FB13640004.

I found a way to achieve deletion, saving context and make cascade deleteRule working. I'm not sure why it works but it does. This is particular useful for custom ModelContext where autoSave is disabled. First, I make sure that the autoSave feature is disabled. Next, I delete all the models in a single transaction which allows the deletion of child models by cascade. Then I rollback the context. At this step, child models are deleted but not parents. That's why I finally delete models in a new transaction.

I know that it's not ideal but It seems to work waiting for a fix.

This is my workaround :

extension ModelContext {

	/// Deletes models from ModelContext and saves changes to the persistent storage.
	/// - Parameter models: the models to delete.
	/// - Warning: This method is a workaround for deleting models and saving context since explicitly saving context prevents `cascade` delete rule to work.
	public func deleteAndSave<T: PersistentModel>(_ models: [T]) throws {
		func deleteModels() {
			for model in models {
				delete(model)
			}
		}

		let initialAutosaveState = autosaveEnabled

		autosaveEnabled = false

		try transaction {
			deleteModels()

			rollback()
		}

		try transaction {
			deleteModels()
		}

		autosaveEnabled = initialAutosaveState
	}
}