I am trying to get filterable attributes of product collection after applying filter to it programmatically.

same as layered navigation idea after I apply filter to category, it just return attributes that I can filter with it. that's what I am trying to do here.

I need that to return filterable attributes after applying filter to collection to send it to mobile app via api.

$category = Mage::getModel('catalog/category')->setStoreId(1)->load(84);
$collection = $category->getProductCollection()
                        ->setOrder('position', 'ASC')
                        ->addAttributeToFilter('status', 1)
                        ->addAttributeToFilter('visibility', 4)

$filtringAttributes = Array
    (object) array
            'label' => 'Ref Nav Doors',
            'code' => 'ref_nav_doors',
            'value' => 693

    (object) array
            'label' => 'Color',
            'code' => 'color',
            'value' => 5

if (!empty($filtringAttributes)) {

    foreach ($filtringAttributes as $attribute) {
        $key = $attribute->code;
        $value = $attribute->value;
        $collection->addAttributeToFilter($key, $value);
  • What is the result of your code?
    – mtr.web
    Commented Oct 26, 2018 at 18:37
  • My code just filtering products collection using attributes and return filtered collection.. i want to get filterable attributes from this collection Commented Oct 26, 2018 at 19:06
  • You want to return the attributes that it is filtered by, or all possible attributes to filter with?
    – mtr.web
    Commented Oct 26, 2018 at 19:32
  • I already have the attributes that it is filtered by & i want all possible attributes that i can filter with. Commented Oct 26, 2018 at 20:05

1 Answer 1


I am not sure if this fits your needs exactly, but it will give you all of the columns added by your addAttributeToSelect('*') function, and all of those will be filterable in the collection.

$first = $collection

$columns = array_keys($first);

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