I need to display magento 2 category tree on footer and on some other places. I think best practice is creating a module and call it on desired block (place). How to do that ? I already created a module but it is not working it returns an error "Object DOMDocument should be created."
app/code/Muaw/CategoriesList/registration.php
<?php
\Magento\Framework\Component\ComponentRegistrar::register(
\Magento\Framework\Component\ComponentRegistrar::MODULE,
'Muaw_CategoriesList',
__DIR__
);app/code/Muaw/CategoriesList/Block/CategorisCollection.phtml
<?php
namespace Muaw\CategoriesList\Block;
class CategorisCollection extends \Magento\Framework\View\Element\Template
{
protected $_categoryHelper;
protected $categoryFlatConfig;
protected $topMenu;
/**
* @param \Magento\Framework\View\Element\Template\Context $context
* @param \Magento\Catalog\Helper\Category $categoryHelper
* @param array $data
*/
public function __construct(
\Magento\Framework\View\Element\Template\Context $context,
\Magento\Catalog\Helper\Category $categoryHelper,
\Magento\Catalog\Model\Indexer\Category\Flat\State $categoryFlatState,
\Magento\Theme\Block\Html\Topmenu $topMenu
)
{
$this->_categoryHelper = $categoryHelper;
$this->categoryFlatConfig = $categoryFlatState;
$this->topMenu = $topMenu;
parent::__construct($context);
}
/**
* Return categories helper
*/
public function getCategoryHelper()
{
return $this->_categoryHelper;
}
/**
* Return categories helper
* getHtml($outermostClass = '', $childrenWrapClass = '', $limit = 0)
* example getHtml('level-top', 'submenu', 0)
*/
public function getHtml()
{
return $this->topMenu->getHtml();
}
/**
* Retrieve current store categories
*
* @param bool|string $sorted
* @param bool $asCollection
* @param bool $toLoad
* @return \Magento\Framework\Data\Tree\Node\Collection|\Magento\Catalog\Model\Resource\Category\Collection|array
*/
public function getStoreCategories($sorted = false, $asCollection = false, $toLoad = true)
{
return $this->_categoryHelper->getStoreCategories($sorted, $asCollection, $toLoad);
}
/**
* Retrieve child store categories
*
*/
public function getChildCategories($category)
{
if ($this->categoryFlatConfig->isFlatEnabled() && $category->getUseFlatResource()) {
$subcategories = (array)$category->getChildrenNodes();
} else {
$subcategories = $category->getChildren();
}
return $subcategories;
}
}
app/code/Muaw/CategoriesList/etc/di.xml
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../../lib/internal/Magento/Framework/ObjectManager/etc/config.xsd">
<type name="Muaw\CategoriesList\Block\CategorisCollection">
<arguments>
<argument name="deleteorderAction" xsi:type="array">
<item name="context" xsi:type="string">\Magento\Framework\View\Element\Template\Context</item>
<item name="helper" xsi:type="string">\Magento\Catalog\Helper\Category</item>
<item name="flatstate" xsi:type="string">\Magento\Catalog\Model\Indexer\Category\Flat\State</item>
<item name="menu" xsi:type="string">\Magento\Theme\Block\Html\Topmenu</item>
</argument>
</arguments>
</type>
</config>
app/code/Muaw/CategoriesList/etc/module.xml
<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
<module name="Muaw_CategoriesList" setup_version="2.0.1" schema_version="2.0.0">
<sequence>
<module name="Magento_Catalog"/>
</sequence>
</module>
</config>
app/code/Muaw/CategoriesList/view/frontend/template/storecategories.phtml
<?php
$categories = $this->getStoreCategories(true, false, true);
$categoryHelper = $this->getCategoryHelper();
?>
<ul>
<?php
foreach ($categories as $category):
if (!$category->getIsActive()) {
continue;
}
?>
<li><a href="<?php echo $categoryHelper->getCategoryUrl($category) ?>"><?php echo $category->getName() ?></a>
</li>
<?php
if ($childrenCategories = $this->getChildCategories($category)):
?>
<ul>
<?php
foreach ($childrenCategories as $childrenCategory):
if (!$childrenCategory->getIsActive()) {
continue;
}
?>
<li>
<a href="<?php echo $categoryHelper->getCategoryUrl($childrenCategory) ?>"><?php echo $childrenCategory->getName() ?></a>
</li>
<?php
endforeach;
?>
</ul>
<?php
endif;
endforeach;
?>
</ul>
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