/**
* 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;
}
/**
* Remove the price filter options from the filterable attributes
*
* @param Mage_Catalog_Block_Layer_View $oBlock
*/
protected function removePriceFilter($oBlock)
{
$aFilterableAttributes = $oBlock->getData('_filterable_attributes');
$aNewFilterableAttributes = array();
foreach ($aFilterableAttributes as $oFilterableAttribute) {
if ($oFilterableAttribute->getAttributeCode() != 'price') {
$aNewFilterableAttributes[] = $oFilterableAttribute;
}
}
$oBlock->setData('_filterable_attributes', $aNewFilterableAttributes);
}
/**
* Layered navigation block, clears on changed associated category ID
*
* @param Mage_Catalog_Block_Layer_View $block
*/
public function applyCatalogLayerView(Mage_Catalog_Block_Layer_View $block)
{
// Set cache tags
$tags = $block->getLayer()->getStateTags();
$block->setData('cache_tags', $tags);
$keys = $this->_getBasicKeys($block);
$keys[] = $block->getLayer()->getStateKey();
foreach (Mage::app()->getRequest()->getParams() as $key => $value) {
$value = Mage::helper('cache')->paramValueToCacheKey($value);
$keys[] = $key . '_' . $value;
}
$block->setData('cache_key', $this->_getCacheKey($keys));
}
