Обработка категорий для своего компонента - Модификации расширений для Joomla

JSubMenuHelper::addEntry(
	'Categories (Items - Catid)',
	"index.php?option=com_categories&extension=com_testcat.items.catid",
	$vName == 'categories.items'
);

JSubMenuHelper::addEntry(
	JText::_('JCATEGORIES'),
	'index.php?option=com_categories&extension=com_testcat',
	$vName == 'categories');

<menu link="option=com_categories&amp;extension=com_testcat.items.catid" view="categories" img="components/com_testcat/assets/images/s_items.png" alt="Testcat/Categories">COM_TESTCAT_ITEMS_CATID</menu>

<menu link="option=com_categories&amp;extension=com_testcat" view="categories" img="components/com_testcat/assets/images/s_items.png" alt="Testcat/Categories">COM_TESTCAT_ITEMS_CATID</menu>

	<fields name="request">
		<fieldset name="request"
		>
			<field name="id" type="category"
				description="JGLOBAL_FIELD_CATEGORIES_CHOOSE_CATEGORY_DESC"
				extension="com_testcat"
				label="JGLOBAL_FIELD_CATEGORIES_CHOOSE_CATEGORY_LABEL"
				show_root="true"
				required="true"
			/>
		</fieldset>
	</fields>

	public function getItems()
	{
		if(!count($this->_items))
		{
			$app = JFactory::getApplication();
			$menu = $app->getMenu();
			$active = $menu->getActive();
			$params = new JRegistry();
			if($active)
			{
				$params->loadString($active->params);
			}
			$options = array();
			$options['countItems'] = $params->get('show_cat_items_cat', 1) || !$params->get('show_empty_categories_cat', 0);
			$categories = JCategories::getInstance('Contact', $options);
			$this->_parent = $categories->get($this->getState('filter.parentId', 'root'));
			if(is_object($this->_parent))
			{
				$this->_items = $this->_parent->getChildren();
			} else {
				$this->_items = false;
			}
		}

		return $this->_items;
	}