Opencart категории на главной?

Question

[alalala]

Помогите поправить модуль
дефолтный модуль opencart "категории"
выводит только 1й уровень категорий, если перейти на категорию 1го уровня, тогда он раскрывает 2й уровень
нужно что бы изначально был раскрыт 1,2й уровень
в php нуб, прошу помощи
прилагаю файл шаблона и контроллер

шаблон

<div class="list-group">
  <?php foreach ($categories as $category) { ?>
  <?php if ($category['category_id'] == $category_id) { ?>
  <a href="<?php echo $category['href']; ?>" class="list-group-item active"><?php echo $category['name']; ?></a>
  <?php if ($category['children']) { ?>
  <?php foreach ($category['children'] as $child) { ?>
  <?php if ($child['category_id'] == $child_id) { ?>
  <a href="<?php echo $child['href']; ?>" class="list-group-item active">&nbsp;&nbsp;&nbsp;- <?php echo $child['name']; ?></a>
  <?php } else { ?>
  <a href="<?php echo $child['href']; ?>" class="list-group-item">&nbsp;&nbsp;&nbsp;- <?php echo $child['name']; ?></a>
  <?php } ?>
  <?php } ?>
  <?php } ?>
  <?php } else { ?>
  <a href="<?php echo $category['href']; ?>" class="list-group-item"><?php echo $category['name']; ?></a>
  <?php } ?>
  <?php } ?>
</div>

контроллер

<?php
class ControllerExtensionModuleCategory extends Controller {
	public function index() {
		$this->load->language('extension/module/category');

		$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])) {
			$data['category_id'] = $parts[0];
		} else {
			$data['category_id'] = 0;
		}

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

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

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

		$data['categories'] = array();

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

		foreach ($categories as $category) {
			$children_data = array();

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

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

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

			$filter_data = array(
				'filter_category_id'  => $category['category_id'],
				'filter_sub_category' => true
			);

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

		return $this->load->view('extension/module/category', $data);
	}
}