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My products have an attribute with possible values like "Shampoo", "Masque", etc...

How do i select all sub categories of the current category that contain products of type eg "Shampoo". I want to list categories, not products.

Thank you

  • For what purpose? Are you referring to frontend or backend? – JamesAllwood May 14 '14 at 11:50
  • I am referring to Frontend. For design purposes. I want to create a page to list only (sub)categories (not products) with the option to filter them based on their products. – kbariotis May 14 '14 at 13:31
  • My page is ready. What i need is a way to filter the categories using Magento's ORM. – kbariotis May 14 '14 at 13:32
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First get the current category.
Let's say it has the id 4.

$currentCategory = Mage::getModel('catalog/category')->load(4);

Depending on context you might be able to get it like this:

$currentCategory = Mage::registry('current_category');

Now get all the products with the value 'shampoo' for your attribtue.

$collection = Mage::getModel('catalog/product')->getCollection()
    ->addAttributeToFilter('your_attribute_code', 'Shampoo'); 
    //if your attribute is dropdown then replace 'Shampoo' with the id of the option
$collection->addCategoryFilter($currentCategory); //filter products only from the current category if needed

get all children of the current category.

$children = $currentCategory->getChildrenCategories();

add the product count to the children collection

$collection->addCountToCategories($children);

Then you can loop through all the children and see if product_count is bigger than 0.

foreach ($children as $child) {
    if ($child->getProductCount() > 0) {
        //do something with $child.
    }
}
  • Would you please explain it a little bit? I tried and seemed like $child->getProductCount() always return 0. – kbariotis Jun 27 '14 at 21:08
  • @kostaskostarelo. This is strange. It worked for me. I took the code from the layered navigation. Look how the method Mage_Catalog_Model_Layer_Filter_Category::_getItemsData works. – Marius Jun 27 '14 at 21:16
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$childCat = Mage::getModel('catalog/category') ->getCollection()->addAttributeToFiler('parent_id',$current_cat_Id) ->addAttributeFilter('entity_id');

$chhid=array();
foreach($childCat as $t)
{
   $chhid[]=$t->getId();
}


 $collection = Mage::getModel('catalog/product')->getCollection()
        ->addAttributeToFilter('your_attribute_code', 'Shampoo'); 

 $collection->joinField('category_id', 'catalog/category_product', 'category_id', 'product_id = entity_id', null, 'left')
 ->addAttributeToSelect('*')
 ->addAttributeToFilter('category_id', array(
     array('finset' => implode( $chhid)),
 );
  $collection->groupByAttribute(category_id');
  • your code doesn't work. :/ – kbariotis Jun 27 '14 at 21:12
  • I just want to add selected category in observer, how can i call selected category? @Amit – zus Aug 2 '19 at 11:59

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