modelContainer(for:inMemory:isAutosaveEnabled:isUndoEnabled:onSetup:)
Sets the model container in this scene for storing the provided model type, creating a new container if necessary, and also sets a model context for that container in this scene’s environment.
Declaration
@MainActor @preconcurrency func modelContainer(for modelType: any PersistentModel.Type, inMemory: Bool = false, isAutosaveEnabled: Bool = true, isUndoEnabled: Bool = false, onSetup: @escaping (Result<ModelContainer, any Error>) -> Void = { _ in }) -> some Scene
Parameters
- modelType:
The model type defining the schema used to create the model container.
- inMemory:
Whether the container should store data only in memory.
- isAutosaveEnabled:
trueif autosave is enabled. - isUndoEnabled:
Use
undoManagerin the scene’s environment to manage undo operations for the model container. - onSetup:
A callback that will be invoked when the creation of the container has has succeeded or failed.
Discussion
In this example, RecipesApp sets a shared model container to use for all of its windows, configured to store instances of Recipe:
@Model class Recipe { ... }
@main
struct RecipesApp: App {
var body: some Scene {
WindowGroup {
RecipesList()
}
.modelContainer(for: Recipe.self)
}
}The environment’s modelContext property will be assigned a new context associated with this container. All implicit model context operations in this scene, such as Query properties, will use the environment’s context.
By default, the container stores its model data persistently on disk. To only store data in memory for the lifetime of the app’s process, pass true to the inMemory: parameter.
The container will only be created once. New values that are passed to the modelType and inMemory parameters after the view is first created will be ignored.