Attention

TYPO3 v8 has reached its end-of-life March 31st, 2020 and is not maintained by the community anymore. Looking for a stable version? Use the version switch on the top left.

You can order Extended Long Term Support (ELTS) here: TYPO3 ELTS.

The Example Extension

Our first Extension will show an inventory list of products, which we created before in a backend list-module. Each product is marked by a title, a short description and a quantity as the number of pieces in stock. The following steps are necessary for implementation:

  1. Create directory tree and the minimal configuration files

  2. Translate the problem domain in an abstract domain model

  3. Configuration of persistence layer

    • Definition of database tables

    • Configure the display of backend forms

    • Create repositories for product objects

  4. Define the application flow inside the extension (create controller and action methods)

  5. Realize design with HTML-templates

  6. Configure the plugin for list display

  7. Install and test the extension

Tip

We choose the step order inside the example extension, so the connection will stay visible and a »natural« growth of extension and knowledge is given. After gathering the first experience in programming with Extbase, you probably will work in another and quicker order. Furthermore, in the future you will have the Extension Builder, a convenient tool to create the base of an extension which is outlined in chapter 10.