discourse/app/assets/javascripts/admin/routes/admin-backups-index.js.es6

import Backup from 'admin/models/backup';

export default Ember.Route.extend({
  activate() {
    this.messageBus.subscribe("/admin/backups", backups => this.controller.set("model", backups));
  },

  model() {
    return Backup.find();
  },

  deactivate() {
    this.messageBus.unsubscribe("/admin/backups");
  }
});