Opencart 2.3 категории 4 (четвертого) уровня вложенности

Opencart 2.3 категории 4 (четвертого) уровня вложенности - делаем в 2 клика.

1 клик совершаем  \catalog\controller\extension\module\category.php и ставим код:

<?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;
}

if (isset($parts[2])) {
$data['child_id2'] = $parts[2];
} else {
$data['child_id2'] = 0;
}

if (isset($parts[3])) {
$data['child_id3'] = $parts[3];
} else {
$data['child_id3'] = 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();

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

foreach ($children as $child) {

$children2_data = array();
$children2 = $this->model_catalog_category->getCategories($child['category_id']);

foreach ($children2 as $child2) {

$children3_data = array();
$children3 = $this->model_catalog_category->getCategories($child2['category_id']);

foreach ($children3 as $child3) {

$filter_data3 = array(
'filter_category_id' => $child3['category_id'],
);

$children3_data[] = array(
'category_id' => $child3['category_id'],
'name' => $child3['name'] . ($this->config->get('config_product_count') ? ' (' . $this->model_catalog_product->getTotalProducts($filter_data3) . ')' : ''),
'href' => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id']. '_' . $child2['category_id']. '_' . $child3['category_id'])
);


}

$filter_data2 = array(
'filter_category_id' => $child2['category_id'],
);

$children2_data[] = array(
'category_id' => $child2['category_id'],
'name' => $child2['name'] . ($this->config->get('config_product_count') ? ' (' . $this->model_catalog_product->getTotalProducts($filter_data2) . ')' : ''),
'children3' => $children3_data,
'href' => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id']. '_' . $child2['category_id'])
);


}

$filter_data1 = array(
'filter_category_id' => $child['category_id'],
);

$children_data[] = array(
'category_id' => $child['category_id'],
'name' => $child['name'] . ($this->config->get('config_product_count') ? ' (' . $this->model_catalog_product->getTotalProducts($filter_data1) . ')' : ''),
'children2' => $children2_data,
'href' => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id'])
);
}

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

$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);
}
}

Второй клик совершаем в \catalog\view\theme\default\template\extension\module\category.tpl и ставим код:

<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 } else { ?>
<a href="<?php echo $category['href']; ?>" class="list-group-item chaild"><?php echo $category['name']; ?></a>
<?php } ?>
<?php if (($category['children']) && ($category['category_id'] == $category_id)) { ?>
<?php foreach ($category['children'] as $child) { ?>
<?php if ($child['category_id'] == $child_id) { ?>
<a href="<?php echo $child['href']; ?>" class="list-group-item active"> - <?php echo $child['name']; ?></a>
<?php } else { ?>
<a href="<?php echo $child['href']; ?>" class="list-group-item chaild_1"> - <?php echo $child['name']; ?></a>
<?php } ?>
<?php if (($child['children2']) && ($category['category_id'] == $category_id)) { ?>
<?php foreach ($child['children2'] as $child2) { ?>
<?php if ($child2['category_id'] == $child_id2) { ?>
<a href="<?php echo $child2['href']; ?>" class="list-group-item active">   - <?php echo $child2['name']; ?></a>
<?php } else { ?>
<a href="<?php echo $child2['href']; ?>" class="list-group-item chaild_2">   - <?php echo $child2['name']; ?></a>
<?php } ?>
<?php if (($child2['children3']) && ($category['category_id'] == $category_id)) { ?>
<?php foreach ($child2['children3'] as $child3) { ?>
<?php if ($child3['category_id'] == $child_id3) { ?>
<a href="<?php echo $child3['href']; ?>" class="list-group-item active">     - <?php echo $child3['name']; ?></a>
<?php } else { ?>
<a href="<?php echo $child3['href']; ?>" class="list-group-item chaild_3">     - <?php echo $child3['name']; ?></a>
<?php } ?>
<?php } ?>
<?php } ?>
<?php } ?>
<?php } ?>
<?php } ?>
<?php } ?>
<?php } ?>
</div>

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