Magento的 - 加入group_price产品集合

Question

当我拿到的产品集合搭配：

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

我得到一个group_price关键，但它是空的。 （产品有group_price）

Array 
(
    [entity_id] => 1 
    [entity_type_id] => 4 
    [attribute_set_id] => 2 
    [type_id] => simple 
    [sku] => 00000 
    ...... 
    [group_price] => Array 
     (
     ) 

    ...... 
) 

如果我加载产品，我可以得到group_price数据提供：

$product_id = '1'; 
$product = Mage::getModel('catalog/product')->load($product_id); 
$group_price = $product->getData('group_price'); 

我尝试不同的查询使用join（）方法或joinTable（）或joinLeft（）与表'catalog_product_entity_group_price'但没有成功。

如何使用连接查询将group_price数据加入集合？

我想避免迭代集合来加载每个产品并获取group_price。

Answer 1

尝试设置产品在foreach循环，然后获取组价格

$collection = Mage::getModel('catalog/product')->getCollection(); 
foreach($collection as $product){ 
    $product->setId($product->getId()); 
    $group_price = $product->getData('group_price'); 
} 

Answer 2

我延长产品的集合类，并添加此功能

public function addGroupPriceData() 
{ 
    if ($this->getFlag('group_price_added')) { 
     return $this; 
    } 

    $groupPrices = array(); 
    $productIds = array(); 
    foreach ($this->getItems() as $item) { 
     $productIds[] = $item->getId(); 
     $groupPrices[$item->getId()] = array(); 
    } 
    if (!$productIds) { 
     return $this; 
    } 

    /** @var $attribute Mage_Catalog_Model_Resource_Eav_Attribute */ 
    $attribute = $this->getAttribute('group_price'); 
    if ($attribute->isScopeGlobal()) { 
     $websiteId = 0; 
    } else if ($this->getStoreId()) { 
     $websiteId = Mage::app()->getStore($this->getStoreId())->getWebsiteId(); 
    } 

    $adapter = $this->getConnection(); 
    $columns = array(
     'price_id' => 'value_id', 
     'website_id' => 'website_id', 
     'all_groups' => 'all_groups', 
     'cust_group' => 'customer_group_id', 
     'price' => 'value', 
     'product_id' => 'entity_id' 
    ); 
    $select = $adapter->select() 
     ->from($this->getTable('catalog/product_attribute_group_price'), $columns) 
     ->where('entity_id IN(?)', $productIds); 


    if ($websiteId == '0') { 
     $select->where('website_id = ?', $websiteId); 
    } else { 
     $select->where('website_id IN(?)', array('0', $websiteId)); 
    } 

    foreach ($adapter->fetchAll($select) as $row) { 
     $groupPrices[$row['product_id']][] = array(
      'website_id' => $row['website_id'], 
      'cust_group' => $row['all_groups'] ? Mage_Customer_Model_Group::CUST_GROUP_ALL : $row['cust_group'], 
      'price' => $row['price'], 
      'website_price' => $row['price'], 

     ); 
    } 

    /* @var $backend Mage_Catalog_Model_Product_Attribute_Backend_Groupprice */ 
    $backend = $attribute->getBackend(); 

    foreach ($this->getItems() as $item) { 
     $data = $groupPrices[$item->getId()]; 
     if (!empty($data) && $websiteId) { 
      $data = $backend->preparePriceData($data, $item->getTypeId(), $websiteId); 
     } 
     $item->setData('group_price', $data); 
    } 

    $this->setFlag('group_price_added', true); 
    return $this; 
}