Usually, developers build an application's backend from scratch as full-stack PHP frameworks don't provide built-in admin sections. WordPress is mainly built on an existing database, which makes it possible to provide a prebuilt admin section. Most of the admin functionality is developed to cater to the existing content management functionality. As developers, you won't be able to develop complex applications without having the knowledge of extending and customizing the capabilities of existing features.

The structure and content of this chapter is built in a way that it enables the tackling of the extendable and customizable components of admin screens and features. We will be looking at the various aspects of an admin interface using popular frameworks and libraries while building the portfolio management application.

In this chapter, we will cover the following topics: