discourse/app/assets/javascripts/admin/addon/routes/admin-plugins.js

import Route from "@ember/routing/route";
export default Route.extend({
  model() {
    return this.store.findAll("plugin");
  },

  actions: {
    showSettings(plugin) {
      const controller = this.controllerFor("adminSiteSettings");
      this.transitionTo("adminSiteSettingsCategory", "plugins").then(() => {
        if (plugin) {
          // filterContent() is normally on a debounce from typing.
          // Because we don't want the default of "All Results", we tell it
          // to skip the next debounce.
          controller.set("filter", `plugin:${plugin.id}`);
          controller.set("_skipBounce", true);
          controller.filterContentNow("plugins");
        }
      });
    },
  },
});