In my last article I tried to outline Magento way of displaying custom product collection using custom controller action at store frontend. I also made a promise to write a follow-up on the topic covering adding layered navigation to custom controller action with goal of making your product collection easier to navigate. For purposes of writing this article, I'll shift my focus back to Magento extension for managing catalog price rules based sale items, code I originally wrote to demonstrate adding custom layered navigation filter in Magento in one of my previous articles. As a part of this extension, I also created custom controller action used to display only sale items and added the layered navigation to that controller action, something I'll do my best to explain here.
Adding layered navigation to custom controller action in Magento
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