discourse/app/assets/javascripts/admin/controllers/admin.js.es6

import computed from 'ember-addons/ember-computed-decorators';

export default Ember.Controller.extend({
  application: Ember.inject.controller(),

  @computed
  showBadges() {
    return this.currentUser.get('admin') && this.siteSettings.enable_badges;
  },

  @computed('application.currentPath')
  adminContentsClassName(currentPath) {
    return currentPath.split('.').filter(segment => {
      return segment !== 'index' &&
        segment !== 'loading' &&
        segment !== 'show' &&
        segment !== 'admin';
    }).map(Ember.String.dasherize).join(' ');
  }
});