backbone-approach.js

import AdminContent from 'views/adminContent';
import UserContent from 'views/userContent';

const Page = Backbone.View.extend({
  render() {
    const contentNode = this.$('.content')[0];
    
    // Use a method of the global app instance
    // (the model of the current user is hold there)
    if (APP.isAdminUser()) {
      this.contentView = new AdminContent(contentNode);
    } else {
      this.contentView = new UserContent(contentNode);
    }
    
    this.contentView.render();
    
    return this;
  }
});