get third level category in opencart 2 - opencart

Question

Im editing template for 2.0.x open cart, and found out that the Menu one the top side - shows only upto second sub category..
and i'v been looking up controller files, template files, to edit it as I want - show just one more level (or all levels..as long as I can get more deeper level of sub sub cats..) of sub categories on the navigation on the left --- for couple weeks..and could not find the way.
header.tpl
<ul>
<?php foreach ($categories as $category_1) { ?>
<li class="sub-menu"><div><?php echo $category_1['name']; ?></div>
<?php if ($category_1['children']) { ?>
<div class="mega-menu-content style-2 col-4 clearfix">
<?php foreach($category_1['children'] as $category_2) { ?>
<ul id="m2">
<li class="mega-menu-title"><div><?php echo $category_2['name']; ?></div>
<?php if ($category_2['children']) { ?>
<ul id="m3">
<?php foreach($category_2['children'] as $category_3) { ?>
<li><div><?php echo $category_3['name']; ?></div></li>
<?php } ?>
</ul>
<?php } ?>
</li>
</ul>
<?php } ?>
</div>
<?php } ?>
</li><!-- .mega-menu end -->
<?php } ?>
</ul>
controller - header.php
//below is written to enable 3rd level sub-categories
$categories_1 = $this->model_catalog_category->getCategories(0);
foreach ($categories_1 as $category_1) {
$level_2_data = array();
$categories_2 = $this->model_catalog_category->getCategories($category_1['category_id']);
foreach ($categories_2 as $category_2) {
$level_3_data = array();
$categories_3 = $this->model_catalog_category->getCategories($category_2['category_id']);
foreach ($categories_3 as $category_3) {
$level_3_data[] = array(
'name' => $category_3['name'],
'column' => $category_3['column'] ? $category_3['column'] : 1,
'href' => $this->url->link('product/category', 'path=' . $category_1['category_id'] . '_' . $category_2['category_id'] . '_' . $category_3['category_id'])
);
}
$level_2_data[] = array(
'name' => $category_2['name'],
'children' => $level_3_data,
'href' => $this->url->link('product/category', 'path=' . $category_1['category_id'] . '_' . $category_2['category_id'])
);
}
$this->data['categories'][] = array(
'name' => $category_1['name'],
'children' => $level_2_data,
'column' => $category_1['column'] ? $category_1['column'] : 1,
'href' => $this->url->link('product/category', 'path=' . $category_1['category_id'])
);
}
// End of the written addition
can anyone help this out please?

Answer 1

controller file
$categories = $this->model_catalog_category->getCategories(0);
foreach ($categories as $category) {
if ($category['top']) {
// Level 2
$children_data = array();
$children = $this->model_catalog_category->getCategories($category['category_id']);
foreach ($children as $child) {
// Level 3
$children_data2 = array();
$children2 = $this->model_catalog_category->getCategories($child['category_id']);
foreach ($children2 as $child2) {
$children_data2[] = array(
'name' => $child2['name'],
'href' => $this->url->link('product/category', 'path=' . $category['category_id'] . '_' . $child['category_id'].'_'.$child2['category_id'])
);
}
$filter_data = array(
'filter_category_id' => $child['category_id'],
'filter_sub_category' => true
);
$children_data[] = array(
'children'=>$children_data2,
'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'])
);
}
// Level 1
$data['categories'][] = array(
'name' => $category['name'],
'children' => $children_data,
'column' => $category['column'] ? $category['column'] : 1,
'href' => $this->url->link('product/category', 'path=' . $category['category_id'])
);
}
}
In view i.e tpl file
<ul class="nav navbar-nav">
<?php foreach ($categories as $category) { ?>
<?php if ($category['children']) { ?>
<li class="dropdown"><?php echo $category['name']; ?>
<div class="dropdown-menu">
<div class="dropdown-inner">
<?php foreach (array_chunk($category['children'], ceil(count($category['children']) / $category['column'])) as $children) { ?>
<ul class="list-unstyled">
<?php foreach ($children as $child) { ?>
<li><?php echo $child['name']; ?></li>
<?php if($child['children']) { ?>
<?php foreach($child['children'] as $child2) { ?>
<ul>
<li><?php echo $child2['name']; ?></li>
</ul>
<?php } } ?>
<?php } ?>
</ul>
<?php } ?>
</div>
<?php echo $text_all; ?> <?php echo $category['name']; ?> </div>
</li>
<?php } else { ?>
<li><?php echo $category['name']; ?></li>
<?php } ?>
<?php } ?>
</ul>
You need to adjust some css code to look it good.
It is tested on OpenCart version 2.0.1.1.