JNODE-CLASS-001
JNode
JNode / JTree
The old tree helpers were removed in Joomla 4.
JNode → Nested table / custom tree
What you will see
- Class "JNode" not found
- Class "JTree" not found
Symptoms people search
category tree fatal
Replace this code
Swap JNode for Nested table / custom tree.
Joomla 3
Remove or stop calling this
$node = new JNode(); $tree = new JTree();Joomla 4 / 6
Use this instead
Use Nested tables (Joomla\CMS\Table\Nested) or your own tree. JNode and JTree are gone.How to fix it
- 1Stop extending JNode/JTree.
- 2Store hierarchy in nested-set columns or rebuild.
Also known as
JNode · JTree
There is no 1:1 swap for this one. The architecture changed. If you cannot rewrite it, Infyways can.
Related issues
- Joomla 3 → 4Joomla API
JRequest::getVar() and the whole JRequest API
JRequest::getVar() → $app->getInput()->get('id')
- Joomla 3 → 4Joomla API
JError / JException
JError::raiseError() → throw new RuntimeException() / try-catch
- Joomla 3 → 4Joomla API
isAdmin() / isSite()
$app->isAdmin() → $app->isClient('administrator') / isClient('site')
- Joomla 3 → 4Joomla API
Factory::getUri()
JFactory::getUri() → Uri::getInstance()
- Joomla 3 → 4Joomla API
Factory::getXml() / JXMLElement
JFactory::getXML() → SimpleXMLElement
- Joomla 3 → 4Joomla API
Factory::getEditor()
JFactory::getEditor() → Editor::getInstance()