【发布时间】：2015-09-10 23:53:26
【问题描述】：
我正在尝试使用 Magento REST API 获取订单列表。
我们使用的 REST 请求非常基本：http://www.example.com/api/rest/orders
响应显示下一个错误：
{
"messages": {
"error": [
{
"code": 0,
"message": "Item (Mage_Sales_Model_Order) with the same id \"54\" already exist"
}
]
}
}
检查我的异常日志以查看发生了什么并获得错误的下一个回溯：
2015-09-10T21:54:59+00:00 ERR (3):
exception 'Exception' with message 'Item (Mage_Sales_Model_Order) with the same id "54" already exist' in /path/to/site/lib/Varien/Data/Collection.php:373
Stack trace:
#0 /path/to/site/lib/Varien/Data/Collection/Db.php(576): Varien_Data_Collection->addItem(Object(Mage_Sales_Model_Order))
#1 /path/to/site/lib/Varien/Data/Collection.php(301): Varien_Data_Collection_Db->load()
#2 /path/to/site/app/code/core/Mage/Sales/Model/Api2/Order.php(302): Varien_Data_Collection->getItems()
#3 /path/to/site/app/code/core/Mage/Api2/Model/Resource.php(245): Mage_Sales_Model_Api2_Order->_retrieveCollection()
#4 /path/to/site/app/code/core/Mage/Api2/Model/Dispatcher.php(74): Mage_Api2_Model_Resource->dispatch()
#5 /path/to/site/app/code/core/Mage/Api2/Model/Server.php(239): Mage_Api2_Model_Dispatcher->dispatch(Object(Mage_Api2_Model_Request), Object(Mage_Api2_Model_Response))
#6 /path/to/site/app/code/core/Mage/Api2/Model/Server.php(107): Mage_Api2_Model_Server->_dispatch(Object(Mage_Api2_Model_Request), Object(Mage_Api2_Model_Response), Object(Mage_Api2_Model_Auth_User_Admin))
#7 /path/to/site/api.php(67): Mage_Api2_Model_Server->run()
#8 {main}
我修改了文件 app/code/core/Mage/Sales/Model/Api2/Order.php（函数 _retrieveCollection）并添加了一行在日志上打印一些信息：
Mage::log($collection->getSelect(),null,'mylog.log');
这是输出的一部分：
[_parts:protected] => Array
(
[straightjoin] =>
[distinct] =>
[columns] => Array
(
[0] => Array
(
[0] => main_table
[1] => *
[2] =>
)
[1] => Array
(
[0] => payment_method
[1] => method
[2] => payment_method
)
[2] => Array
(
[0] => gift_message
[1] => sender
[2] => gift_message_from
)
[3] => Array
(
[0] => gift_message
[1] => recipient
[2] => gift_message_to
)
[4] => Array
(
[0] => gift_message
[1] => message
[2] => gift_message_body
)
[5] => Array
(
[0] => order_tax
[1] => title
[2] => tax_name
)
[6] => Array
(
[0] => order_tax
[1] => percent
[2] => tax_rate
)
)
[union] => Array
(
)
[from] => Array
(
[main_table] => Array
(
[joinType] => from
[schema] =>
[tableName] => sales_flat_order
[joinCondition] =>
)
[payment_method] => Array
(
[joinType] => left join
[schema] =>
[tableName] => sales_flat_order_payment
[joinCondition] => main_table.entity_id = payment_method.parent_id
)
[gift_message] => Array
(
[joinType] => left join
[schema] =>
[tableName] => gift_message
[joinCondition] => main_table.gift_message_id = gift_message.gift_message_id
)
[order_tax] => Array
(
[joinType] => left join
[schema] =>
[tableName] => sales_order_tax
[joinCondition] => main_table.entity_id = order_tax.order_id
)
)
[where] => Array
(
)
[group] => Array
(
)
[having] => Array
(
)
[order] => Array
(
)
[limitcount] =>
[limitoffset] =>
[forupdate] =>
)
[_tableCols:protected] => Array
(
)
)
如果我理解正确，这意味着 SQL 语句类似于：
SELECT
main_table.*,
payment_method.method AS method,
gift_message.sender AS gift_message_from,
gift_message.recipient AS gift_message_to,
gift_message.message AS gift_message_body,
order_tax.title AS tax_name,
order_tax.percent AS tax_rate
FROM
sales_flat_order AS main_table LEFT JOIN
sales_flat_order_payment AS payment_method ON main_table.entity_id = payment_method.parent_id LEFT JOIN
gift_message ON main_table.gift_message_id = gift_message.gift_message_id LEFT JOIN
sales_order_tax AS order_tax ON main_table.entity_id = order_tax.order_id
在手动运行上一个查询后，它得出了多个具有相同 entity_id (sales_flat_order) 的行。这些“重复”的 entity_id 行似乎是以后使用Varien_Data_Collection->addItem时的问题@
使具有相同 entity_id 的两行出现在结果集中的查询部分是 LEFT JOIN sales_order_tax。该表包含的每个订单可以包含 N 行，因为每一行都包含应用的不同税收规则。
例如，在加拿大，我们收集了两种不同的税收规则 一些地区。在不列颠哥伦比亚省，我们收取 5% 的 GST（特定国家/地区） 加上 PST 7%（特定省份）。
我是否在这里遗漏了一些明显的东西，或者我遇到了错误？
任何帮助都非常感谢，感谢阅读！
附：我的问题与此处描述的问题非常接近：Magento API V2 Sales Orders List Not Working
【问题讨论】：
标签： magento magento-1.9