I am writing a block which subclasses
Mage_Catalog_Block_Layer_Filter_Category to display a list of products in each category. To do this I apply
addCategoryFilter() to the layer product collection for each layer filter item, first using
clear() to remove any other filters. So I end up with
$this->getLayer()->getProductCollection()->clear()->addCategoryFilter($category) for each item.
The problem is the last-displayed category filter is not being cleared before the rest of the page renders. So the sidebar layered navigation is still filtered by it. How can I clear it?? I have tried doing
_afterToHtml() but with no luck. Any help much appreciated.