在magento项目中多次遇到这样一个错误:
Item (Bluecom_Onefieldusername_Model_Customer) with the same id "98" already exist
解决方案:
(1) 新建一个类，必须继承Varien_Object
class Mypackage_Mymodule_Model_UniqueId extends Varien_Object{ public function getUniqueNumber(){ list($usec, $sec) = explode(" ", microtime()); return uniqid(mt_rand().$sec.($usec*1000000)); } public function getId(){ return $this->getUniqueNumber(); } }
(2)在getCollection后面使用setItemObjectClass(‘mymodule/uniqueId‘)
Item with the same id "98" already exist
原文：http://www.cnblogs.com/fengliang/p/4118611.html