Realm: property declared as origin of linking objects property does not exist-CodePudding

I'm using Realm Swift for the following code:

class Item: Object {
    @Persisted(primaryKey: true) var name = ""
    @Persisted(originProperty: "items") var collection: LinkingObjects<SomeCollection>
}

class SomeCollection: Object {
    @Persisted(primaryKey: true) var name = ""
    let items = List<Item>()
}

On app startup when I initialize the Realm instance I got:

Property 'SomeCollection.items' declared as origin of linking objects property 'Item.collection' does not exist" UserInfo={NSLocalizedDescription=Schema validation failed due to the following errors:

Interestingly, if I change the line for LinkingObjects to:

let collection = LinkingObjects(fromType: SomeCollection.self, property: "items")

it then works fine, however, after adding an Item instance to the items list of SomeCollection, the collection property of Item instance doesn't show any linked SomeCollection, which I thought should be linked automatically?

What am I doing wrong here?

Thanks for help!

CodePudding user response：

This

let items = List<Item>()

Needs to be this

@Persisted var items = List<Item>()

@Persisted var items: List<Item>

depending on the use case.

The let syntax is how we used to do it.

That's called and Inverse Relationship and is covered in the documentation a bit further.