Book Image

Practical Module development for Prestashop 8

By : Louis AUTHIE
Book Image

Practical Module development for Prestashop 8

By: Louis AUTHIE

Overview of this book

After version 1.7, PrestaShop underwent a host of changes, including migration to a Symfony-based system from an outdated legacy code. This migration brought about significant changes for developers, from routine maintenance to module development. Practical Module Development for PrestaShop 8 is curated to help you explore the system architecture, including migrated and non-migrated controllers, with a concise data structure overview. You’ll understand how hooks enable module customization and optimize the CMS. Through the creation of seven modules, you’ll learn about the structure of modules, hook registration, the creation of front-office controllers, and Symfony back-office controllers. By using Doctrine entities, services, CQRS, grids, and forms, you’ll be guided through the creation of standard, payment and carrier modules. Additionally, you'll customize and override themes to achieve your desired e-commerce store look. By the end of this book, you’ll be well equipped to provide modern solutions with PrestaShop that meet client requirements.
Table of Contents (23 chapters)
Part 1 – Understanding How PrestaShop is Structured and How It Works
Part 2 – How to Create Your Own Modules
Part 3 – Customizing Your Theme
Appendix – Module Upgrade, The Hooks Discovery Tool, and Multi-Store Functions

Using the CQRS design pattern

In the Legacy core, all the controllers use the ObjectModel child classes to manage the interactions with the database for reading and writing. Whereas in the Symfony modern controller, the core uses the CQRS design pattern with the Command and Query objects.

Using a Command object and its CommandHandler class in the CommandBus

If you have to do an UPDATE, DELETE, or INSERT action in the database, you mustn’t directly call Doctrine and handle it directly inside the controller. Instead, you should use a Command object that contains the necessary data for your action to be done. Every type of Command object has a linked CommandHandler class containing a handle() method responsible for executing the desired action.

Prestashop uses a CommandBus, managed by a library called Tactician, which is like a big pipe in which you can put your Commands, and it processes them one by one, matching each Command object with its CommandHandler and executing...