Magento - list.phtml过滤产品集合没有给出正确的分页

Question

我正在尝试过滤list.phtml以满足我的需求,只显示基于属性值的产品.加载产品集合的原始代码是:

$_productCollection=$this->getLoadedProductCollection();
$_helper = $this->helper('catalog/output');

要做过滤我得到了代码:

$_productCollection=$this->getLoadedProductCollection();

$cat_id = Mage::getModel('catalog/layer')->getCurrentCategory()->getId();
$_productCollection = Mage::getResourceModel('catalog/product_collection')
   ->addAttributeToFilter('language', array('eq' => array('English')))
   ->addAttributeToSelect('*')
   ->addCategoryFilter(Mage::getModel('catalog/category')->load($cat_id));


$_helper = $this->helper('catalog/output');

然而,这适用于分页和项目总数(从toolbar.phtml和pager.phtml生成不正确.例如,原始产品集合具有7页的正确分页和每页10个产品.

然而,当我使用上面显示的过滤器时,分页在一页上显示相同的7页和每个过滤的书(有18本英文书籍,因此18本书中的7页是重复的).

请有人帮我解决这个分页问题.

谢谢.

该集合的SQL如下:

 SELECT `e`.*, `at_language`.`value` AS `language`, `cat_index`.`position`
 AS `cat_index_position` FROM `catalog_product_entity`
 AS `e` INNER JOIN `catalog_product_entity_varchar`
 AS `at_language` ON (`at_language`.`entity_id` = `e`.`entity_id`) 
 AND (`at_language`.`attribute_id` = '1002') 
 AND (`at_language`.`store_id` = 0) INNER JOIN `catalog_category_product_index`
 AS `cat_index` ON cat_index.product_id=e.entity_id AND cat_index.store_id=1 
 AND cat_index.visibility IN(2, 4) AND cat_index.category_id='38' 
 AND cat_index.is_parent=1 WHERE (at_language.value = 'English')

Answer 1

在list.phtml文件中使用它:

$_productCollection->clear()
    ->addAttributeToFilter('attribute_set_id', array('eq' => 63))
    ->load();