I have been working on a custom module for Magento (ver. 1.8.0.0) that shows a list of related products of a certain product.
In order to achieve this I have created my own module by overwriting the Mage_Catalog_Block_Product_List
class.
Basically here's how it works:
From a controller I catch the products entity_id
and I store the product in the registry so I can use it inside my custom written Block which is called list.php
Here is the method that fills the product collection:
protected function _getProductCollection()
{
if (is_null($this->_productCollection)) {
$prod = Mage::registry('chosenproduct');
$this->_productCollection = $prod->getRelatedProductCollection()
->addAttributeToSelect('required_options')
->addAttributeToFilter(array(array('attribute'=>'accessory_manufacturer','neq'=>false)))
->addAttributeToSort('position', 'asc')
->addStoreFilter()
->setPageSize(30)
->setCurPage(1);
;
$this->_addProductAttributesAndPrices($this->_productCollection);
Mage::getSingleton('catalog/product_visibility')->addVisibleInCatalogFilterToCollection($this->_productCollection);
$this->setProductCollection($this->_productCollection);
}
return $this->_productCollection;
}
I also added the following in the layout .xml of my custom module to make sure the layered navigation shows:
<reference name="left">
<block type="catalog/layer_view" name="catalog.leftnav" after="currency" template="catalog/layer/view.phtml"/>
</reference>
The layered navigation shows, but it seems that it is taking all products as collection instead of the custom collection that is used in the method I added above.
I also know that I can get the catalog/layer using this $layer = Mage::getSingleton('catalog/layer');
The layer class also has a method called prepareProductCollection and setCollection but for some reason I can't get it to work.
Any help on this?
Basically I want to have the layered navigation for the products that are in the custom collection.
Thanks,
I just managed to achieve what I wanted. I have overwritten both the Mage_Catalog_Model_Layer
class and the Mage_Catalog_Model_Category
Both now have a new variable called $_customCollection: protected $_customProductCollection;
I have overwritten the getProductCollection() in both classes and I added this in the beginning of the method:
if(isset($this->_customProductCollection)){
return $this->_customProductCollection;
}
I have also a method that allows me to set this "customProductCollection" inside both these classes. Once It's set, the rest of the data of the layered navigation/category is based on this collection.
;)