我需要在我的自定义表和Magento的实体表之一之间建立内部联接.如何使用Magento的ORM模型做到这一点？

非常感谢.

解决方法:

通读官方的API documentation,并查看joinTable,joinField和joinAttribute方法.

这是连接与Orders集合相关的表的示例：

$this->_orders = Mage::getResourceModel('sales/order_collection')
        ->addAttributeToSelect('*')
        ->joinAttribute('billing_firstname', 'order_address/firstname', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_lastname', 'order_address/lastname', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_street', 'order_address/street', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_company', 'order_address/company', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_city', 'order_address/city', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_region', 'order_address/region', 'billing_address_id', null, 'left')
        ->joinAttribute('billing_country', 'order_address/country_id', 'billing_address_id', null, 'left')
        ->joinAttribute('shipping_firstname', 'order_address/firstname', 'shipping_address_id', null, 'left')
        ->joinAttribute('shipping_lastname', 'order_address/lastname', 'shipping_address_id', null, 'left')
        ->joinAttribute('shipping_street', 'order_address/street', 'shipping_address_id', null, 'left')
        ->joinAttribute('shipping_company', 'order_address/company', 'shipping_address_id', null, 'left')
        ->joinAttribute('shipping_telephone', 'order_address/telephone', 'shipping_address_id', null, 'left')
        ->joinAttribute('shipping_fax', 'order_address/fax', 'shipping_address_id', null, 'left');

您还应该查看this question,以获取有关已尝试的方法及其效果的示例.

HTH,
京东