discourse/app/assets/javascripts/admin/routes/admin-site-settings-category.js.es6

export default Discourse.Route.extend({
  model(params) {
    // The model depends on user input, so let the controller do the work:
    this.controllerFor('adminSiteSettingsCategory').set('categoryNameKey', params.category_id);
    return Ember.Object.create({
      nameKey: params.category_id,
      name: I18n.t('admin.site_settings.categories.' + params.category_id),
      siteSettings: this.controllerFor('adminSiteSettingsCategory').get('filteredContent')
    });
  }
});