Magento列出不屬於某個類別的產品

Question

我需要列出類別內的所有產品。在Magento中，您不需要爲產品指定類別，因此我想列出所有不屬於某個類別的產品。

這是我試過，但它給了我一個錯誤：

$productCollection = Mage::getModel('catalog/product')->getCollection(); 

foreach($productCollection as $_product){ 

    $productId = $_product->getId(); 
    $product = Mage::getModel('catalog/product')->load($productId); 

    $currentCatIds = $_product->getCategoryIds(); 
    $categoryCollection = Mage::getResourceModel('catalog/category_collection') 
       ->addAttributeToSelect('name') 
       ->addAttributeToSelect('url') 
       ->addAttributeToFilter('entity_id', $currentCatIds) 
       ->addIsActiveFilter(); 
    $i = 0; 

    foreach($categoryCollection as $cat){ 
     $i++; 
     //echo $cat->getName().' '.$cat->getUrl(); 
    } 

    if($i) echo $product->getName(); 
} 

Answer 1

$collection = Mage::getModel('catalog/product')->getCollection() 
        ->addAttributeToFilter('category_ids',''); 

見Magento get a list of products that are not related to any category