OpenCart 🇺🇦

$this->language->load('module/category');

$this->data['heading_title'] = $this->language->get('heading_title');

if (isset($this->request->get['path'])) {
	$parts = explode('_', (string)$this->request->get['path']);
} else {
	$parts = array();
}

if (isset($parts[0])) {
	$this->data['category_id'] = $parts[0];
} else {
	$this->data['category_id'] = 0;
}

if (isset($parts[1])) {
	$this->data['child_id'] = $parts[1];
} else {
	$this->data['child_id'] = 0;
}

$this->load->model('catalog/category');

$this->load->model('catalog/product');

$this->data['categories'] = array();

$categories = $this->model_catalog_category->getCategories(0);

foreach ($categories as $category) {
	$total = $this->model_catalog_product->getTotalProducts(array('filter_category_id' => $category['category_id']));

	$children_data = array();

	$children = $this->model_catalog_category->getCategories($category['category_id']);

	foreach ($children as $child) {
		$data = array(
			'filter_category_id'  => $child['category_id'],
			'filter_sub_category' => true
		);

		$product_total = $this->model_catalog_product->getTotalProducts($data);

		$total += $product_total;

		$children_data[] = array(
			'category_id' => $child['category_id'],
			'name'        => $child['name'] . ($this->config->get('config_product_count') ? ' (' . $product_total . ')' : ''),
			'href'        => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id'])	
		);		
	}

	$this->data['categories'][] = array(
		'category_id' => $category['category_id'],
		'name'        => $category['name'] . ($this->config->get('config_product_count') ? ' (' . $total . ')' : ''),
		'children'    => $children_data,
		'href'        => $this->url->link('product/category', 'path=' . $category['category_id'])
	);	
}

if (file_exists(DIR_TEMPLATE . $this->config->get('config_template') . '/template/module/category.tpl')) {
	$this->template = $this->config->get('config_template') . '/template/module/category.tpl';
} else {
	$this->template = 'default/template/module/category.tpl';
}

$this->render();