Joomla Module Development: When It Is Needed and How It Is Built
When the standard Joomla modules are not enough, custom development comes to the rescue. A module is simpler than a component, but it has its own nuances. We have developed more than 150 components and modules and we know for sure: a module is a storefront, not a warehouse. Let us look at it step by step.
When a Custom Module Is Needed
Ordering a module makes sense if:
- You need to output data from a non-standard source.
- Unique display logic is required.
- Standard modules do not provide the needed flexibility.
- Integration with an external API is needed.
If the task can be solved with a standard module — a custom one is not needed.
How a Module Differs from a Component
It is important to understand the difference:
- A module is a block on a page.
- A component is a whole site section.
- A module is simpler and cheaper to develop.
- A module has no pages of its own.
The choice between a module and a component depends on the task.
The Development Process
Module development includes:
- Task analysis and drafting a specification.
- Architecture design.
- Writing the code.
- Testing.
- Implementation.
Even a simple module requires care.
What a Custom Module Should Contain
A quality module is:
- Clean code according to Joomla standards.
- Settings in the control panel.
- Caching for performance.
- Protection from SQL injections.
- Documentation.
Module Security
A module is part of the site and must be secure:
- Escaping the output.
- Checking access permissions.
- Validating input data.
- Protection from XSS.
A vulnerable module endangers the whole site.
Compatibility with Updates
A module must survive Joomla updates:
- Use standard APIs.
- Follow the coding standards.
- Test on new Joomla versions.
- Plan module updates.
Code written in violation of the standards will break upon an update.
"A good module is an invisible helper. It works unnoticed but makes the site more convenient."
If you need a custom module for Joomla — we have a Components and Modules service: we develop according to a specification, with a clean architecture and a guarantee. And if you need a full-fledged section — it is better to choose a component rather than a module.