Magento – Magento 2 get image for Subcategory Collection

categoryimagemagento2

I'm trying to get image for category in magento 2

\Magento\Framework\View\Element\Template\Context $context,
\Magento\Catalog\Model\Layer\Resolver $layerResolver,

public function getCurrentCategory()
{
    return $this->_catalogLayer->getCurrentCategory();
}

public function getCurrentChildCategories()
{
    $categories = $this->_catalogLayer->getCurrentCategory()->getChildrenCategories();
    return $categories;
}

public function getCurrentChildSubCategories($cat)
{
    $subcategories = $cat->getChildrenCategories();
    return $subcategories;
}

and phtml:

<?php $_categories = $block->getCurrentChildCategories(); ?>
<?php
foreach ($_categories as $category):
    echo ("</br>".$category->getName());
    $_subcategories = $block->getCurrentChildSubCategories($category);
    foreach ($_subcategories as $subcategory):
        echo ("</br>_".$subcategory->getName());
    endforeach;
endforeach;
?>

but there are no image href column name in category collection. How can I get image in category collection or how can i get image by entity_id in magento 2 correctly? Any suggestions will be helpful.

Best Answer

You should add an event in etc/frontend/events.xml

<?xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="catalog_category_flat_loadnodes_before">
        <observer name="add_image_to_collection" instance="Namespace\Module\Observer\AddImage" />
    </event>
</config>

and the observer:

use Magento\Framework\Event\Observer;
use Magento\Framework\Event\ObserverInterface;

class AddImage implements ObserverInterface
{
    /**
     * @param Observer $observer
     * @return $this
     */
    public function execute(Observer $observer)
    {
        $select = $observer->getSelect();
        return $select->columns('image');
    }
}

Related Solutions

Magento – How do display category icons/images when top-level category is selected

if you are in the category view page you can do the following.

$mainCategory = Mage::registry('current_category');
foreach ($mainCategory->getChildrenCategories() as $category){
    $collection = $category->getProductCollection()->addAttributeToSelect('image');//or thumbnail or small_image
    Mage::getSingleton('catalog/product_status')->addVisibleFilterToCollection($collection);
    Mage::getSingleton('catalog/product_visibility')->addVisibleInCatalogFilterToCollection($collection); 
    $collection->addAttributeToSort('position');//or 'name' or any other attribute
    $product = $collection->setPage(1, 1)->getFirstItem();
    if ($product->getId()){//if the category has at least a valid product
       $imageUrl = Mage::>helper('catalog/image')->init($product, 'image')->resize(60);
       //do something with $imageUrl
    }
}

Magento – Excluding category by entity_id from the collection of categories

Mage_Catalog_Model_Resource_Category::getChildrenCategories returns a loaded collection, so your filter does not get applied.

public function getChildrenCategories($category)
{
    $collection = $this->_getChildrenCategoriesBase($category);
    $collection->addAttributeToFilter('is_active', 1)
        ->addIdFilter($category->getChildren())
        ->load();

    return $collection;
}

protected function _getChildrenCategoriesBase($category)
{
    $collection = $category->getCollection();
    $collection->addAttributeToSelect('url_key')
        ->addAttributeToSelect('name')
        ->addAttributeToSelect('all_children')
        ->addAttributeToSelect('is_anchor')
        ->setOrder('position', Varien_Db_Select::SQL_ASC)
        ->joinUrlRewrite();
    return $collection;
}

I'm not sure the best way to proceed as _getChildrenCategoriesBase is a protected method. This might be the type of collection you could create if it was not a protected method

    //base methods
    $_new_categories = Mage::getResourceModel('catalog/category_collection');
    $_new_categories->addAttributeToSelect('url_key')
        ->addAttributeToSelect('name')
        ->addAttributeToSelect('all_children')
        ->addAttributeToSelect('is_anchor')
        ->setOrder('position', Varien_Db_Select::SQL_ASC)
        ->joinUrlRewrite();

    //children methods
    $_new_categories->addAttributeToFilter('is_active', 1)
        ->addIdFilter($_grandparent_cat->getChildren());

    //your methods
    $_new_categories
        ->addAttributeToSelect('*')
        ->addAttributeToFilter('entity_id', array('neq' => $eid));

Related Topic