PrestaCustom PrestaShop Modules: 7 Rules for Surviving Updates
Most custom-built modules break with the first version upgrade. Here are the rules we follow for every piece of code we deliver.
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.
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