Magento：获取仅包含包含特定文本评论的货件的货件集合

Question

我需要查询订单货件集合（Mage_Sales_Model_Mysql4_Order_Shipment_Collection）。我只想看看订单上的货件是否与某段文字相匹配。

在非EAV SQL，它会是这个样子：

SELECT shipments.id 
FROM shipments 
JOIN comments ON (
    shipments.id = comments.shipment_id 
    AND comments.content IN('Possible comment', 'Another possible comment') 
    ) 
GROUP BY shipments.id 

很显然，我想用Magento的原生模型的方法来完成它：

$shipments = Mage::getResourceModel('sales/order_shipment_collection') 
    ->addAttributeToSelect('*') 
    // ?? 
    // ?? 
    ->load(); 

这可能吗？

Answer 1

为了保持整洁，我会在我自己的资源模型中放置以下内容，它扩展了Mage_Sales_Model_Mysql4_Order_Shipment_Collection。

$shipments = Mage::getResourceModel('mymodule/my_custom_collection') 
    ->addAttributeToSelect('*') 
    ->addCommentsToFilter(array('Possible comment', 'Another possible comment')); 

：

public function addCommentsToFilter($comments = array()) 
{ 
    return $this->join('sales/shipment_comment', 'main_table.entity_id=parent_id', 'comment') 
     ->addFieldToFilter('comment', array('in'=>$comments)); 
} 

然后调用它