Question

我尝试在Mage / Catalog / Block / Product / List.php上添加以下内容，_getProductCollection（）

 $this->_productCollection
->addAttributeToFilter('category_id', array('nin' => array('36,37'),));

但它提出了：

Fatal error: Call to a member function getBackend() on a non-object in C:\app\code\core\Mage\Eav\Model\Entity\Abstract.php on line 816

我怀疑是因为它正在寻找产品没有“category_id”的属性而我尝试添加：

 $this->_productCollection
->joinField('category_id', 'catalog/category_product', 'category_id', 'product_id = entity_id', null, 'left')
    ->addAttributeToFilter('category_id', array('nin' => array('36,37'),));

但这会带来另一个错误：

Joined field with this alias is already declared"

我做错了什么？ Mage / Catalog / Block / Product / List.php是否应用此覆盖的正确文件？
我只想将它应用于搜索结果，即catalogsearch / result /

Answer 1

尝试使用 ** - ＆gt; addCategoriesFilter（$ category）; **而不是 - ＆gt; addAttributeToFilter（

它对我有用：）

Answer 2

实际上这里需要进行一些小改动

- ＆GT; addAttributeToFilter（ 'category_ids'，阵列（ 'nin的'=＆GT; '36' ））

category_ids而不是category_id;）

Answer 3

当我使用addAttributeToFilter（'category_ids'）时，这是导致错误的SQL

SELECT e。*，search_result。relevance，price_index。price，price_index。tax_class_id，{{ 1}}。price_index，IF（price_index.tier_price IS NOT NULL，LEAST（price_index.min_price，price_index.tier_price），price_index.min_price）AS final_price，minimal_price。{{1 }，price_index。min_price，price_index。max_price，price_index。tier_price AS cat_index FROM position AS cat_index_position INNER JOIN catalog_product_entity AS e ON search_result.product_id = e.entity_id AND search_result.query_id ='2677' INNER JOIN catalogsearch_result AS search_result ON price_index.entity_id = e.entity_id AND price_index.website_id ='1'AND price_index.customer_group_id = 0 INNER JOIN catalog_product_index_price AS price_index ON cat_index.product_id = e.entity_id AND cat_index.store_id ='1'AND cat_index.visibility IN（3,4）AND cat_index.category_id ='2'WHERE（{ {1}}。catalog_category_product_index NOT IN（'36,37'））和（cat_index。e NOT IN（'36,37'））按category_ids排序desc LIMIT 20

Answer 4

嗯，我得到了它的工作。试试这个：

/*my rand products here*/
$products->getSelect()->order(new Zend_Db_Expr('RAND()'));
$products->setPageSize(4)->setCurPage(1);
$this->setProductCollection($products);

/*this made the trick*/
$array_ids_cat=array();
foreach($category_ids as $cat_id){
    $array_ids_cat[]=array('finset'=>$cat_id);
}

$_products = $this->getProductCollection()->joinField('category_id', 'catalog/category_product', 'category_id', 'product_id = entity_id', null, 'left')                                            ->addAttributeToFilter('category_id', $array_ids_cat  );

如何从Magento搜索过滤掉某些类别的产品？

4 个答案: