These are Categories List in admin:
Categories Showing in Layered Navigation on Shop Parts Category Page:
Now you can see only first child categories of shop parts category are showing and I want to show them as well as all children of those categories.
How can I achieve this functionality?
Need to override following model :
Magento\CatalogSearch\Model\Layer\Filter\Category
Override by creating new Module and in di.xml file by following way :
<preference for="Magento\CatalogSearch\Model\Layer\Filter\Category" type="Vendor\Module\Model\Layer\Filter\Category" />
Below is my overrided Model :
NOTE:Following code is for 6-Level Categories If You have less or more level categories then use foreach loop as requirement (I mention level in each for loop)
<?php
namespace Vendor\Module\Model\Layer\Filter;
use Magento\Catalog\Model\Layer\Filter\AbstractFilter;
use Magento\Catalog\Model\Layer\Filter\DataProvider\Category as CategoryDataProvider;
class Category extends AbstractFilter
{
/**
* @var \Magento\Framework\Escaper
*/
private $escaper;
/**
* @var CategoryDataProvider
*/
private $dataProvider;
protected $_logger;
/**
* @param \Magento\Catalog\Model\Layer\Filter\ItemFactory $filterItemFactory
* @param \Magento\Store\Model\StoreManagerInterface $storeManager
* @param \Magento\Catalog\Model\Layer $layer
* @param \Magento\Catalog\Model\Layer\Filter\Item\DataBuilder $itemDataBuilder
* @param \Magento\Catalog\Model\CategoryFactory $categoryFactory
* @param \Magento\Framework\Escaper $escaper
* @param CategoryManagerFactory $categoryManager
* @param array $data
*/
public function __construct(
\Magento\Catalog\Model\Layer\Filter\ItemFactory $filterItemFactory,
\Magento\Store\Model\StoreManagerInterface $storeManager,
\Magento\Catalog\Model\Layer $layer,
\Magento\Catalog\Model\Layer\Filter\Item\DataBuilder $itemDataBuilder,
\Magento\Framework\Escaper $escaper,
\Magento\Catalog\Model\Layer\Filter\DataProvider\CategoryFactory $categoryDataProviderFactory,
\Psr\Log\LoggerInterface $logger, //log injection
array $data = []
) {
parent::__construct(
$filterItemFactory,
$storeManager,
$layer,
$itemDataBuilder,
$data
);
$this->escaper = $escaper;
$this->_requestVar = 'cat';
$this->dataProvider = $categoryDataProviderFactory->create(['layer' => $this->getLayer()]);
$this->_logger = $logger;
}
/**
* Apply category filter to product collection
*
* @param \Magento\Framework\App\RequestInterface $request
* @return $this
*/
public function apply(\Magento\Framework\App\RequestInterface $request)
{
$categoryId = $request->getParam($this->_requestVar) ?: $request->getParam('id');
if (empty($categoryId)) {
return $this;
}
$this->dataProvider->setCategoryId($categoryId);
$category = $this->dataProvider->getCategory();
$this->getLayer()->getProductCollection()->addCategoryFilter($category);
if ($request->getParam('id') != $category->getId() && $this->dataProvider->isValid()) {
$this->getLayer()->getState()->addFilter($this->_createItem($category->getName(), $categoryId));
}
return $this;
}
/**
* Get filter value for reset current filter state
*
* @return mixed|null
*/
public function getResetValue()
{
return $this->dataProvider->getResetValue();
}
/**
* Get filter name
*
* @return \Magento\Framework\Phrase
*/
public function getName()
{
return __('Category');
}
/**
* Get data array for building category filter items
*
* @return array
*/
protected function _getItemsData()
{
$_objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$productCollection = $this->getLayer()->getProductCollection();
$category = $this->dataProvider->getCategory();
$optionsFacetedData = $productCollection->getFacetedData('category');
$categories = $category->getChildrenCategories();
$collectionSize = $productCollection->getSize();
if ($category->getIsActive()) {
foreach ($categories as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
) {
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-1%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
$cat = $_objectManager->create('Magento\Catalog\Model\Category')->load($category->getId());
$sub_category = $cat->getChildrenCategories();
foreach ($sub_category as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
)
{
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-2%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
$cat = $_objectManager->create('Magento\Catalog\Model\Category')->load($category->getId());
$sub_category = $cat->getChildrenCategories();
foreach ($sub_category as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
)
{
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-3%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
$cat = $_objectManager->create('Magento\Catalog\Model\Category')->load($category->getId());
$sub_category = $cat->getChildrenCategories();
foreach ($sub_category as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
)
{
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-4%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
$cat = $_objectManager->create('Magento\Catalog\Model\Category')->load($category->getId());
$sub_category = $cat->getChildrenCategories();
foreach ($sub_category as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
)
{
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-5%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
$cat = $_objectManager->create('Magento\Catalog\Model\Category')->load($category->getId());
$sub_category = $cat->getChildrenCategories();
foreach ($sub_category as $category) {
if ($category->getIsActive()
&& isset($optionsFacetedData[$category->getId()])
&& $this->isOptionReducesResults($optionsFacetedData[$category->getId()]['count'], $collectionSize)
)
{
$this->itemDataBuilder->addItemData(
$this->escaper->escapeHtml($category->getName().'%level-6%'.$category->getParentId()),
$category->getId(),
$optionsFacetedData[$category->getId()]['count']
);
}
}
}
}
}
}
}
}
return $this->itemDataBuilder->build();
}
}
