CODEWITHSUNDEEP
iosswiftswiftdataswift-data-modelcontext
moonvader
moonvader

Reputation: 21111

SwiftData no such table error for one of models

I have 2 models in my app, fist (ModelA) is working fine - data is persistent no matter how many times I restart app on the simulator, but the second (ModelB) sometimes losts it data and I see errors about no such table found in Xcode debugger. I don't understand what is the difference between them.

@Model
final class ModelA: Identifiable {
    @Attribute(.unique) var id: String
    var name: String
    
    init(id: String = UUID().uuidString, name: String) {
        self.id = id
        self.name = name
    }
}

@Model
final class ModelB: Identifiable {
    @Attribute(.unique) var id: String
    var param: String
    
    init(id: String = UUID().uuidString, param: String) {
        self.id = id
        self.param = param
    }
}

@main
struct MyApp: App {
    var sharedModelContainer: ModelContainer = {
        let schema = Schema([
            ModelA.self,
            ModelB.self
        ])
        let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false)

        do {
            return try ModelContainer(for: schema, configurations: [modelConfiguration])
        } catch {
            fatalError("Could not create ModelContainer: \(error)")
        }
    }()

    var body: some Scene {
        WindowGroup {
            TabView { /* === views === */ }
       }.modelContainer(sharedModelContainer)
}

upd I wasn't able to find the root cause and fix it (even though it is data fetch issue I believe it relates to how view hierarchy is structured), but I found workaround instead - I made second model a struct (Identifiable, Codable, Hashable)

Upvotes: 2

Views: 212

Answers (1)

exmav10
exmav10

Reputation: 41

In my case, I was creating a modal container for my each repository, after creating a single container for all my repositories to fetch the models solved the problem.

Upvotes: 0

Related Questions