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Anyone successfully able to add two or more ModelConfigurations to a ModelContainer?
DESCRIPTION OF PROBLEM:
When you create two ModelConfigurations for two different models and combine them into one ModelContainer, it seems the @Query fails to find the models.
Crashes app with error:
“Thread 1: "NSFetchRequest could not locate an NSEntityDescription for entity name 'NumberModel'"
STEPS TO REPRODUCE
1 - Create a new iOS project.
2 - In ContentView.swift add this code:
import SwiftData
import SwiftUI
struct ContentView: View {
@Query private var colors: [ColorModel]
@Query private var numbers: [NumberModel]
var body: some View {
List {
ForEach(colors) { color in
Text(color.name)
}
ForEach(numbers) { number in
Text(number.name)
}
}
}
}
#Preview {
ContentView()
.modelContainer(for: [ColorModel.self, NumberModel.self])
}
3 - In App file, add this code:
import SwiftData
import SwiftUI
@Model
class ColorModel {
var name: String = ""
init(name: String) {
self.name = name
}
}
@Model
class NumberModel {
var name: String = ""
init(name: String) {
self.name = name
}
}
@main
struct MultipleModelConfigsApp: App {
private var container: ModelContainer
init() {
do {
let config1 = ModelConfiguration(for: ColorModel.self)
let config2 = ModelConfiguration(for: NumberModel.self)
let container = try ModelContainer(
for: ColorModel.self, NumberModel.self,
configurations: config1, config2
)
self.container = container
} catch {
fatalError("ModelContainer creation failed.")
}
}
var body: some Scene {
WindowGroup {
ContentView()
.modelContainer(container)
}
}
}
4 - Now run the app and observe the crash and the error stated above.
VERSION OF XCODE
Version 15.1 (15C65)
FEEDBACK REPORT
FB: FB13504577
(Xcode project attached to FB)
Posted
by
BigMtnStudio.
Last updated
BigMtnStudio.
.