Summary

In this chapter, we discovered what hooks are and their important link with modules. We saw how they were stored in the database with the hook ObjectModel child class.

Then, we listed the two types of hooks in PrestaShop: the display and action hooks, which can display HTML and filter/update data, respectively.

Modules can register and unregister to multiple hooks in order to be triggered as soon as those hooks are executed from anywhere in the code. The Modules classes will contain functions named hookNameOfTheHook($params) defining how to behave. Then, we showed how to execute hooks from any type of file in the code.

Hooks are easy to use and enable everyone to customize the shop without having to edit the core files. This way, you can have the core code of PrestaShop on one side and the modules on the other side. If you need to update your core files, you won’t have to change your modules all the time, and that is very important. Hooks also enable one module...