Components inside Components in view! {}

[BigfootN]

Hello,

Imagine I have a component Foo and a component Bar.

Is it possible to place / add / reference Foo inside the component Bar ? Is it possible to place it in the view! macro ?

If yes how to ? And why isn't it mentioned in the book (from what I've read) ?

Or are the template the only way to do this ?

Thank you very much in advance for any help

[sanpii]

Hello,

The way I found (I don’t understand how to use widget templates…):

#[relm4::component]
impl SimpleComponent for Bar {
    type Init = ();
    type Input = ();
    type Output = ();

    view! {
        gtk::Box {
            append: model.foo.widget(),
        }
    }

    fn init(
        counter: Self::Init,
        root: Self::Root,
        sender: ComponentSender<Self>,
    ) -> ComponentParts<Self> {
        let foo = Foo::builder()
            .launch(())
            .detach();

        let model = AppModel { foo };

        let widgets = view_output!();

        ComponentParts { model, widgets }
    }
}

It would be nice to have a syntax similar to relm3 to do this directly in the view! macro:

view! {
    gtk::Box {
        Foo(/* init */) {
            /* Messages forwarding */
        }
    }
}