Custom PrestaShop Modules: 7 Rules for Surviving Updates

A poorly built module is technical debt waiting to explode

Every PrestaShop update can turn a fragile module into a breakdown. These seven rules prevent 90% of regressions.

1. No overrides when a hook is available

Overrides are the leading cause of conflicts. A well-chosen hook survives updates.

2. Namespaces and PSR-4 autoloading

We structure the module like a proper application—not a folder full of files.

3. No SQL queries in templates

Templates handle display. Business logic belongs in classes.

4. Versioned migrations

One upgrade_x_y_z.php method per version ensures installation and update processes never diverge.

5. Multistore and multilingual support from day one

Adding multistore support later costs three times as much.

6. Explicit PHP compatibility

We test the module against the PHP versions supported by the client's hosting environment.

7. Clean uninstallation

A module must be able to remove its tables, hooks, and files without leaving anything behind.

Our commitment

Every module we deliver is documented, version-controlled, and backed by a bug-fix warranty.