Speaker Deck

Experiences in migrating a Drupal 7 module to Drupal 8

by João Ventura

Published March 22, 2017 in Programming

https://seville2017.drupaldays.org/sessions/experiences-migrating-drupal-7-module-drupal-8

In this session, I will describe my experiences in updating a Drupal module from Drupal 7 to Drupal 8 (the adsense module).

The session will describe the lessons learned in this process, including the removal of the previous "sub-module as plugins" system, and it's replacement with a true plugin system based on the infrastructure provided by Drupal 8. It will also advocate for a thorough removal of the .module file as much as possible.

Some tools helpful for module development will also be addressed including:

Composer - to manage external dependencies.
Drupal Module Upgrader - for automatic update of code from D7 to D8.
Coder - static checks for coding standards.

Main points to discuss on the subject of module development for Drupal 8:
module.info.yml and the other YAML files
Object Oriented Programming
PHP's PSR-4 and the module file structure
PHP Annotations
The Drupal 8 plugin system
Forms
Blocks
Twig templates
Page controllers and the routing system