I have 2 vesrion schema and Migration plan.
Version 2: Add new properties and Property renamed.
static let release: ModelContainer = {
do {
let schema = Schema(versionedSchema: V2Schema.self)
let appGroupURL = FileManager.default.containerURL(forSecurityApplicationGroupIdentifier: "***")
let databaseURL = appGroupURL?.appending(path: "Models.sqlite")
let databaseName = "Models"
let configuration = ModelConfiguration(databaseName,
schema: schema,
url: databaseURL!,
cloudKitDatabase: .automatic)
return try ModelContainer(for: schema,
migrationPlan: ModelMigrationPlan.self,
configurations: [configuration])
} catch {
fatalError(error.localizedDescription)
}
}()
enum ModelMigrationPlan: SchemaMigrationPlan {
static var schemas: [VersionedSchema.Type] {
[V1Schema.self, V2Schema.self]
}
static var stages: [MigrationStage] {
[v1ToV2MigrationStage]
}
}
When I test migration in UnitTest, It works fine. But In running in device, error is occurred.
error: Store failed to load. <NSPersistentStoreDescription: 0x1077aa330> (type: SQLite, url: file:///private/var/mobile/Containers/Shared/AppGroup/***/Model.sqlite) with error = Error Domain=NSCocoaErrorDomain Code=134504 "Cannot use staged migration with an unknown model version." UserInfo={NSLocalizedDescription=Cannot use staged migration with an unknown model version.} with userInfo {
NSLocalizedDescription = "Cannot use staged migration with an unknown model version.";
}
Has anyone experienced this same problem or know a solution?
