Mostrar subcategorias en categoría principal con ZOO

<?php
/**
* @package   com_zoo
* @author    YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license   http://www.gnu.org/licenses/gpl.html GNU/GPL
*/

// no direct access
defined('_JEXEC') or die('Restricted access');

?>

<div class="category">
<?php if ($category) : ?>

	<?php $link = $this->app->route->category($category); ?>

	<?php if ($this->params->get('template.show_categories_titles')) : ?>
	<h2 class="title">

		<a href="<?php echo $link; ?>" title="<?php echo $category->name; ?>"><?php echo $category->name; ?></a>
		
		<?php if ($this->params->get('template.show_categories_item_count')) : ?>
			<span>(<?php echo $category->totalItemCount(); ?>)</span>
		<?php endif; ?>
		
	</h2>
	<?php endif; ?>

	<?php if ($this->params->get('template.show_categories_descriptions') && $category->getParams()->get('content.teaser_description')) : ?>
	<div class="description"><?php echo $category->getParams()->get('content.teaser_description'); ?></div>
	<?php endif; ?>

	<?php if (($image = $category->getImage('content.teaser_image')) && $this->params->get('template.show_categories_images')) : ?>
	<a class="teaser-image" href="<?php echo $link; ?>" title="<?php echo $category->name; ?>">
		<img src="<?php echo $image['src']; ?>" title="<?php echo $category->name; ?>" alt="<?php echo $category->name; ?>" <?php echo $image['width_height']; ?>/>
	</a>
	<?php endif; ?>

	<?php if ($this->params->get('template.show_sub_categories') && $category->getChildren()): ?>
	<ul class="sub-categories">
		<?php
		
			foreach ($category->getChildren() as $child) {
				if (!$child->totalItemCount() && !$this->params->get('config.show_empty_categories', false)) continue;
				$link = $this->app->route->category($child);
				$item_count = ($this->params->get('template.show_sub_categories_item_count')) ? ' <span>('.$child->totalItemCount().')</span>' : '';
				echo '<li><a href="'.$link.'" title="'.$child->name.'">'.$child->name.'</a>'.$item_count.'</li>';
			}
			
		?>
	</ul>
	<?php endif; ?>

<?php endif; ?>
</div>

<?php
/**
* @package   com_zoo
* @author    YOOtheme http://www.yootheme.com
* @copyright Copyright (C) YOOtheme GmbH
* @license   http://www.gnu.org/licenses/gpl.html GNU/GPL
*/

// no direct access
defined('_JEXEC') or die('Restricted access');

// include assets css/js
if (strtolower(substr($GLOBALS['app']->getTemplate(), 0, 3)) != 'yoo') {
	$this->app->document->addStylesheet('assets:css/reset.css');
}
$this->app->document->addStylesheet($this->template->resource.'assets/css/zoo.css');

// show description only if it has content
if (!$this->category->description) {
	$this->params->set('template.show_description', 0);
}

// show image only if an image is selected
if (!($image = $this->category->getImage('content.image'))) {
	$this->params->set('template.show_image', 0);
}

$css_class = $this->application->getGroup().'-'.$this->template->name;

?>

<div id="yoo-zoo" class="yoo-zoo <?php echo $css_class; ?> <?php echo $css_class.'-'.$this->category->alias; ?>">

	<?php if ($this->params->get('template.show_alpha_index')) : ?>
		<?php echo $this->partial('alphaindex'); ?>
	<?php endif; ?>

	<?php if ($this->params->get('template.show_title') || $this->params->get('template.show_description') || $this->params->get('template.show_image')) : ?>
	<div class="details <?php echo 'alignment-'.$this->params->get('template.alignment'); ?>">

		<?php if ($this->params->get('template.show_title')) : ?>
		<h1 class="title"><?php echo $this->category->name; ?></h1>
		<?php endif; ?>

		<?php if ($this->params->get('template.show_description') || $this->params->get('template.show_image')) : ?>
		<div class="description">
			<?php if ($this->params->get('template.show_image')) : ?>
				<img class="image" src="<?php echo $image['src']; ?>" title="<?php echo $this->category->name; ?>" alt="<?php echo $this->category->name; ?>" <?php echo $image['width_height']; ?>/>
			<?php endif; ?>
			<?php if ($this->params->get('template.show_description')) echo $this->category->getText($this->category->description); ?>
		</div>
		<?php endif; ?>

	</div>
	<?php endif; ?>


	<?php

		// render categories
		$has_categories = false;
		if ($this->params->get('template.show_categories', true) && ($this->category->childrenHaveItems() || ($this->params->get('config.show_empty_categories', false) && !empty($this->selected_categories)))) {
			$has_categories = true;
			echo $this->partial('categories');
		}

	?>

	<?php

		// render items
		if (count($this->items)) {
			echo $this->partial('items', compact('has_categories'));
		}

	?>

</div>