Using a template in another blueprint template

[jakob30061]

Coming from web frameworks, i am used to reuse widgets.
How can i use a template in another blueprint file as if they were nativ gtk widgets?

only resources i could find was https://gtk-rs.org/gtk4-rs/stable/latest/book/composite_templates.html

Thanks for your help in advance.

Code:

using Gtk 4.0;
using Adw 1;

template $TasksView : Gtk.Box {
  content: # my content is here but i think not important for that question
}

using Gtk 4.0;
using Adw 1;

template $AppWindow : Adw.ApplicationWindow {
  title: _("Tasks");
  default-width: 1050;
  default-height: 750;
  width-request: 300;
  height-request: 300;

  content: Stack main_stack {
    transition-type: crossfade;

    StackPage {
      name: "processes";
      child: TasksView {                              <- Error here
        id: "custom_widget_processes";
      };
    }

    StackPage {
      name: "tasks";
      child: TasksView {                            <- Error here
        id: "custom_widget_processes-1";
      };
    }
  };
}

and the imp.rs for the parent widget:
TasksView::ensure_type(); doesn't work for me

  use crate::views::tasks::TasksView;

  #[derive(CompositeTemplate, Default)]
  #[template(file = "src/window.blp")]
  pub struct AppWindow {
    pub settings: OnceCell<Settings>,
  }

  #[glib::object_subclass]
  impl ObjectSubclass for AppWindow {
    const NAME: &'static str = "AppWindow";
    type Type = super::AppWindow;
    type ParentType = adw::ApplicationWindow;

    fn class_init(klass: &mut Self::Class) {
      TasksView::ensure_type();

      klass.bind_template();
    }

    fn instance_init(obj: &InitializingObject<Self>) {
      obj.init_template();
    }
  }

  impl ObjectImpl for AppWindow {}
  impl WidgetImpl for AppWindow {}
  impl WindowImpl for AppWindow {}
  impl AdwWindowImpl for AppWindow {}
  impl ApplicationWindowImpl for AppWindow {}
  impl AdwApplicationWindowImpl for AppWindow {}

[bilelmoussaoui]

I can't answer this without seeing the content of your TasksView

[jakob30061]

Thanks for the quick response.
Here is my full repo with the important files listed below.

If i replace the

child: TasksView {                              <- Error here
  id: "custom_widget_processes";
};

with a gtk widget like Gtk.Box it is working.

TaskView Imp

Where i want to use it:
Window.rs
window.blp

[bilelmoussaoui]

Per the docs in https://jwestman.pages.gitlab.gnome.org/blueprint-compiler/reference/templates.html, you should be writing child: $TasksView no?

[jakob30061]

This worked. Sorry for this silly question. I couldn't find this info.