Develop Joomla 3.x components using legacy MVC and JFactory APIs.
npx skills add https://github.com/zb-ss/opencode-workflows --skill joomla3-legacy
Please help me install this Agent Skill. Skill: joomla3-legacy Source: https://github.com/zb-ss/opencode-workflows/tree/main/skill/joomla3-legacy Command: npx skills add https://github.com/zb-ss/opencode-workflows --skill joomla3-legacy
This Skill provides a comprehensive guide and code examples for developing components in Joomla 3.x, focusing on its legacy, non-namespaced MVC structure and core JFactory usage.
JControllerLegacy, JModelList, JModelAdmin, and JTable classes.JFactory calls for application, input, database, user, session, document, and language management.Use the joomla3-legacy skill to generate a basic CRUD component structure for Joomla 3.
High-intent search queries and answers about installing and using this skill.
To develop a custom component in Joomla 3, use the legacy non-namespaced MVC architecture by extending JControllerLegacy, JModelList, and JTable classes. This approach provides standard directory layouts and code patterns for building extensions.
JFactory works in Joomla 3 by providing a centralized API to access application, input, database, user, session, document, and language management. You call JFactory methods directly to retrieve these core application instances without manual instantiation.
The correct component structure for a Joomla 3 extension is a standard directory layout separating controllers, models, tables, and views. This non-namespaced structure organizes legacy MVC files correctly for the CMS to route requests properly.
Joomla 3 legacy development requires specific security patterns including CSRF token checks, permission authorization, and input/output escaping. Implementing these practices ensures your custom components prevent cross-site request forgery and unauthorized access.
You can use JModelAdmin to build CRUD interfaces for existing Joomla 3 sites by extending the class within your legacy component's models directory. This provides built-in methods for database record creation, retrieval, updating, and deletion.
You should not use the legacy MVC pattern for new Joomla 4 or 5 projects, as it relies on deprecated non-namespaced classes like JControllerLegacy. This approach is strictly for maintaining or extending existing Joomla 3.x sites.
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