How to save and load a world from text?

[simbleau]

I've seen the https://github.com/bevyengine/bevy/blob/main/examples/scene/scene.rs example

From what I gather, saving a scene as a ron file is easy:

let scene = DynamicScene::from_world(&scene_world);
let type_registry = world.resource::<AppTypeRegistry>();
let type_registry = type_registry.read();
let serialized_scene = scene.serialize(&type_registry).unwrap();

and reading a ron file is easy through the asset server:

commands.spawn(DynamicSceneBundle {
    scene: asset_server.load("assets/file.ron"),
    ..default()
});

The question I have is, how would I load a file from plain text?, e.g.

This doesn't compile.

let file_contents = include_str!("assets/file.ron");
let dynamic_scene: DynamicSceneBundle = serde_ron::from_str(&file_contents);
let handle: Handle<DynamicSceneBundle> = asset_server.get_handle();
commands.spawn(DynamicSceneBundle {
    scene: handle,
    ..default()
});

I have a legitimate need for this, because I am making a world editor web app where the user loads a file from a web dialog. I can get the file contents on web, but loading it from an asset server doesn't work.