「controller:edit-category.tabs」モデルのObserverがトリガーされない

開発
1

Hello,

I’m trying to observe changes to the model of the EditCategoryTabs controller but for some reasons, nothing happens:

import { observes } from "@ember-decorators/object"
import { withPluginApi } from "discourse/lib/plugin-api"

function initialize(api) {
  api.modifyClass(
    "controller:edit-category.tabs",
    (Superclass) =>
      class extends Superclass {
        @observes("model.parent_category_id")
        onParentCategoryChange() {
          console.log("Apply some logic here when parent category changes");
        }
      }
  );
}

export default {
  name: "new-category-permissions",
  initialize() {
    withPluginApi(initialize);
  },
}

I tried many things but I’m still not able to trigger the observer callback when the model changes. Anything I missed that might explain how to this correctly?

For the context, I’m using Discourse 3.5.1 built with official launcher.

Thanks for your help!