php – 按类别对产品进行排序(在父类别视图中)

<events>
        <catalog_block_product_list_collection>
            <observers>
                <namespace_module>
                    <class> namespace_module/observer</class>
                    <method>collectionList</method>
                </namespace_module >
            </observers>
        </catalog_block_product_list_collection>
    </events>

2创建类Namespace_Module_Model_Observer

class Namespace_Module_Model_Observer
{
    public function collectionList($observer)
    {
        /** @var Mage_Catalog_Model_Category $currentCategory */
        $currentCategory = Mage::registry('current_category');

        $children = Mage::getResourceModel('catalog/category')->getChildrenIds($currentCategory);
        if (!$children) {
            return $this;
        }
        $children = implode(',',$children);
        /** @var Mage_Catalog_Model_Resource_Product_Collection $collection */
        $collection = $observer->getCollection();

        $attr = $this->_getAttribute('name');

        $collection->getSelect()
            ->join(
                array('c' => $this->_getResource()->getTableName('catalog_category_product')),"c.product_id = e.entity_id AND c.category_id IN ($children)",array('child_category_id' => 'category_id')
                )
            ->join(
                array('ac' => $this->_getResource()->getTableName('catalog_category_entity_' . $attr['backend_type'])),"c.category_id = ac.entity_id AND ac.attribute_id = {$attr['attribute_id']}",array('child_category_name' => 'value')
            )
        ->order('child_category_name DESC');

        return $this;
    }

    protected function _getAttribute($attributeCode,$static = true,$entityTypeId = 3)
    {
        $readAdapter = $this->_getReadAdapter();
        $select = $readAdapter->select()
            ->from($this->_getResource()->getTableName('eav/attribute'))
            ->reset(Zend_Db_Select::COLUMNS)
            ->columns(array('attribute_id','backend_type'))
            ->where('entity_type_id = ?',$entityTypeId)
            ->where('attribute_code = ?',$attributeCode)
            ->limit(1);
        if (!$static) {
            $select->where('backend_type != ?','static');
        }

        $entityId = $readAdapter->query($select)->fetch();
        return $entityId;
    }

    protected function _getResource()
    {
        return Mage::getSingleton('core/resource');
    }

    protected function _getReadAdapter()
    {
        return $this->_getResource()->getConnection('core_read');
    }
}

这里我们按子类别名称设置集合排序,您可以将其更改为类别ID或添加到集合任何类别属性并按此属性排序

->order('child_category_name DESC');

这只是示例按子类别快速对产品集合进行排序的示例,当然您可以动态添加工具栏中的选项和排序集合