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POMagento - extending the Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection class
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  1. POMagento - extending the Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection class
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    copied!<p>OK, so this is leading on from another question I asked here recently. Basically, I want to extend the <strong>Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection</strong> class, so I can add some extra filters for the product collections that can be re-used throughout my store (such as best-selling). This is meant to replace the following code, which I currently use, which is in my template.phtml file:</p> <pre><code>$_bs_productCollection = Mage::getResourceModel('reports/product_collection') -&gt;addAttributeToSelect('name') -&gt;addAttributeToFilter('visibility', $visibility) -&gt;addOrderedQty() -&gt;setOrder('ordered_qty', 'desc') -&gt;setPageSize(6); $_bs_productCollection-&gt;load(); </code></pre> <p>So, I set up my module, and it's loading (it shows in the admin/system/config/advanced). Folder structure as follows:</p> <pre><code>etc/modules/Samsmodule.xml local/Samsmodule local/Samsmodule/Catalog local/Samsmodule/Catalog/etc local/Samsmodule/Catalog/etc/config.xml local/Samsmodule/Catalog/Model local/Samsmodule/Catalog/Model/Resource/Eav/Mysql4/Product/Collection.php local/Samsmodule/Catalog/Helper (not sure if this is needed or not) </code></pre> <p>My <strong>Samsmodule.xml</strong> is:</p> <pre><code>&lt;config&gt; &lt;modules&gt; &lt;Samsmodule_Catalog&gt; &lt;active&gt;true&lt;/active&gt; &lt;codePool&gt;local&lt;/codePool&gt; &lt;/Samsmodule_Catalog&gt; &lt;/modules&gt; &lt;/config&gt; </code></pre> <p>My <strong>config.xml</strong> is:</p> <pre><code>&lt;config&gt; &lt;modules&gt; &lt;Samsmodule_Catalog&gt; &lt;version&gt;0.1.0&lt;/version&gt; &lt;/Samsmodule_Catalog&gt; &lt;/modules&gt; &lt;global&gt; &lt;models&gt; &lt;catalog_resource_eav_mysql4&gt; &lt;rewrite&gt; &lt;product_collection&gt;Samsmodule_Catalog_Model_Resource_Eav_Mysql4_Product_Collection&lt;/product_collection&gt; &lt;/rewrite&gt; &lt;/catalog_resource_eav_mysql4&gt; &lt;/models&gt; &lt;/global&gt; &lt;/config&gt; </code></pre> <p>And my <strong>Collection.php</strong> is:</p> <pre><code>&lt;?php class Samsmodule_Catalog_Model_Resource_Eav_Mysql4_Product_Collection extends Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection { public function filterbyBestSelling($attribute,$visibility,$_category,$no_of_items) { $this-&gt;addAttributeToSelect($attribute)-&gt;addOrderedQty()-&gt;setOrder('ordered_qty', 'desc')-&gt;addAttributeToFilter('visibility', $visibility)-&gt;addCategoryFilter($_category)-&gt;setPageSize($no_of_items); return $this; } } </code></pre> <p>And then from my template.phtml I call it like so:</p> <pre><code>$_bs_productCollection = Mage::getResourceModel('reports/product_collection') -&gt;filterbyBestSelling('name',$visibility,$_category,6); </code></pre> <p>But it's not working - what am I missing? If I just add the code from my <strong>Collection.php</strong> to the bottom of my core <strong>Collection.php</strong> file, and use the same call, it works fine.</p>
 

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