Extension Development

Concepts

Learn about the concept of extensions in TYPO3, the difference between system extension and local extensions. Learn about Extbase as an MVC basis for extension development.

File structure

Lists reserved file and directory names within and extension. Also lists file names that are used in a certain way by convention.

This chapter should also help you to find your way around in extensions and sitepackages that where automatically generated or that you downloaded as an example.

Howto

Helps you kickstart your own extension or sitepackage. Explains how to publish an extension. Contains howto for different situations like creating a frontend plugin, a backend module or to extend existing TCA.

Best practises and conventions

Explains how to pick an extensions key, how things should be named and how to best use configuration files (ext_localconf.php and ext_tables.php)