private type FactoryWidgets in public interface

[uvizhe]

Hello,
I'm trying to split my code into modules and I am facing this issue:
When I move a factory with a relevant struct to a separate module I have to declare the struct public

pub struct MyFactoryData {
    ...
}

#[relm4::factory_prototype]
impl FactoryPrototype for MyFactoryData {
    type Widgets = FactoryWidgets;
    ...
}

so to be able to use it in main.rs in AppModel e.g.

struct AppModel {
    dataset: FactoryVec<MyFactoryData>
}

But this causes a compiler error
error[E0446]: private type `FactoryWidgets` in public interface

Can you suggest a solution? I am relatively new to Rust so it might be on a surface but I don't see it.

[AaronErhardt]

You should be able to use #[relm4::factory_prototype(pub)] to make the generated FactoryWidgets struct public.

Btw. this hasn't anything to do with Rust directly, but the macro generates the struct as not-public by default. And because the code generation is somewhat hidden, it's not easy to find this feature. It's documented in the book quite at the end, at least for the widget macro.

[0xfalafel]

Comming from Google, I had the same issue.

#[relm4::factory_prototype(pub)] doesn't exist anymore, and the link is dead.
But it's possible to use #[relm4::factory(pub)] to obtain the same effect.