/**
* Add layerd navigation filters on current layer block
*
* @param Mage_Catalog_Block_Layer_View $block
*
* @return $this
*/
protected function _addLayeredNavigation($block)
{
$stateBlock = $block->getLayout()->createBlock('catalog/layer_state')->setLayer($block->getLayer());
$block->setChild('layer_state', $stateBlock);
$filterableAttributes = Mage::getResourceModel('factfinder_asn/product_attribute_collection');
foreach ($filterableAttributes as $index => $attribute) {
$filter = $block->getLayout()->createBlock('factfinder_asn/catalog_layer_factfinder')->setAttributeModel($attribute)->setLayer($block->getLayer())->init();
$block->setChild($attribute->getAttributeCode() . '_filter', $filter);
// remove category filter - it's enough to add it as a child
if ($attribute->getAttributeCode() == 'category') {
$filterableAttributes->removeItemByKey($index);
}
}
$block->setData('_filterable_attributes', $filterableAttributes);
return $this;
}
