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2012-06-14T12:47:29.487
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2012-06-15T03:31:29.630
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This is surprisingly nasty - I can't see a way to do this simply in the DB, as entity_id isn't a standard attribute (it's really just a key field) and the core code repeats the same logic in three place (urgh). It's also changed a lot since the older versions of Magento, so many of the tutorials and forum posts on this no longer apply. What you can do is add "entity_id" in as a new sorting option, similar to the way "Best Value" exists as a sorting option. In the following example I've labelled it "Newest" The usual caveats apply: You should do this in an extension (or at the least in /local/ overrides) but the three core file methods that need overriding in Community Edition 1.7 are: Mage_Adminhtml_Model_System_Config_Source_Catalog_ListSort <pre><code>public function toOptionArray() { $options = array(); $options[] = array(//benz001 'label' => Mage::helper('catalog')->__('Newest'), 'value' => 'entity_id' ); //end benz001 $options[] = array( 'label' => Mage::helper('catalog')->__('Best Value'), 'value' => 'position' ); foreach ($this->_getCatalogConfig()->getAttributesUsedForSortBy() as $attribute) { $options[] = array( 'label' => Mage::helper('catalog')->__($attribute['frontend_label']), 'value' => $attribute['attribute_code'] ); } return $options; } </code></pre> Then Mage_Catalog_Model_Category_Attribute_Source_Sortby <pre><code> /** * Retrieve All options * * @return array */ public function getAllOptions() { if (is_null($this->_options)) { $this->_options = array( array(//benz001 'label' => Mage::helper('catalog')->__('Newest'), 'value' => 'entity_id' ), //end benz001 array( 'label' => Mage::helper('catalog')->__('Best Value'), 'value' => 'position' )); foreach ($this->_getCatalogConfig()->getAttributesUsedForSortBy() as $attribute) { $this->_options[] = array( 'label' => Mage::helper('catalog')->__($attribute['frontend_label']), 'value' => $attribute['attribute_code'] ); } } return $this->_options; } </code></pre> And then Mage_Catalog_Model_Config <pre><code> public function getAttributeUsedForSortByArray() { $options = array( 'entity_id' => Mage::helper('catalog')->__('Newest'), //benz001 'position' => Mage::helper('catalog')->__('Position'), ); foreach ($this->getAttributesUsedForSortBy() as $attribute) { /* @var $attribute Mage_Eav_Model_Entity_Attribute_Abstract */ $options[$attribute->getAttributeCode()] = $attribute->getStoreLabel(); } return $options; } </code></pre> With those in place, flush the cache and refresh and you can then select to sort by Newest/entity_id in the config and on the category page and on the frontend. Note: even if you have caching turned off it's still a good idea to flush the cache - parts of the admin are cached even when caching is disabled.
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