这是一个奇怪的问题，我想了解为什么Magento正在做它正在做的事情。
我正在尝试在类别页面上列出产品，这些产品是通过扩展程序过滤的，该扩展程序会将来自客户的产品隐藏在客户之外，而不是批准的客户组中的产品。
过滤器需要传递产品集合以进行处理。 Helper类用于通过覆盖Mage_Catalog_Model_Layer中的prepareProductCollection函数来执行此操作。
此时集合应该是Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection类型，但是传递给扩展Mage_Catalog_Model_Layer的类的集合是Mage_Catalog_Model_Resource_Product_Collection类型，这导致Helper类失败。如果查看下面的堆栈跟踪，在函数之前使用的所有Magento类都希望返回Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection。
帮助不大？ ： - /
Recoverable Error: Argument 1 passed to Netzarbeiter_GroupsCatalog_Helper_Data::addGroupsFilterToProductCollection() must be an instance of Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection, instance of Mage_Catalog_Model_Resource_Product_Collection given, called in /home/namespace/public_html/b2b/app/code/community/Netzarbeiter/GroupsCatalog/Model/Catalog/Layer.php on line 37 and defined in /home/namespace/public_html/b2b/app/code/community/Netzarbeiter/GroupsCatalog/Helper/Data.php on line 475
#0 /home/namespace/public_html/b2b/app/code/community/Netzarbeiter/GroupsCatalog/Helper/Data.php(475): mageCoreErrorHandler(4096, 'Argument 1 pass...', '/home/namespace/...', 475, Array)
#1 /home/namespace/public_html/b2b/app/code/community/Netzarbeiter/GroupsCatalog/Model/Catalog/Layer.php(37): Netzarbeiter_GroupsCatalog_Helper_Data->addGroupsFilterToProductCollection(Object(Mage_Catalog_Model_Resource_Product_Collection))
#2 /home/namespace/public_html/b2b/app/code/core/Mage/Catalog/Model/Layer.php(103): Netzarbeiter_GroupsCatalog_Model_Catalog_Layer->prepareProductCollection(Object(Mage_Catalog_Model_Resource_Product_Collection))
#3 /home/namespace/public_html/b2b/app/code/core/Mage/Catalog/Block/Product/List.php(87): Mage_Catalog_Model_Layer->getProductCollection()
#4 /home/namespace/public_html/b2b/app/code/core/Mage/Catalog/Block/Product/List.php(142): Mage_Catalog_Block_Product_List->_getProductCollection()
#5 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(918): Mage_Catalog_Block_Product_List->_beforeToHtml()
#6 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#7 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('product_list', true)
#8 /home/namespace/public_html/b2b/app/code/core/Mage/Catalog/Block/Category/View.php(90): Mage_Core_Block_Abstract->getChildHtml('product_list')
#9 /home/namespace/public_html/b2b/app/design/frontend/safes/default/template/local/catalog/category/view.phtml(87): Mage_Catalog_Block_Category_View->getProductListHtml()
#10 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(241): include('/home/namespace/...')
#11 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/safes/...')
#12 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#13 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#14 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#15 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Text_List->_toHtml()
#16 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(637): Mage_Core_Block_Abstract->toHtml()
#17 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(581): Mage_Core_Block_Abstract->_getChildHtml('content', true)
#18 /home/namespace/public_html/b2b/app/design/frontend/safes/default/template/page/1column.phtml(48): Mage_Core_Block_Abstract->getChildHtml('content')
#19 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(241): include('/home/namespace/...')
#20 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/safes/...')
#21 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#22 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Block/Abstract.php(919): Mage_Core_Block_Template->_toHtml()
#23 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#24 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#25 /home/namespace/public_html/b2b/app/code/local/Aserty/Filter/controllers/CategoryController.php(34): Mage_Core_Controller_Varien_Action->renderLayout()
#26 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Aserty_Filter_CategoryController->viewAction()
#27 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('view')
#28 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#29 /home/namespace/public_html/b2b/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#30 /home/namespace/public_html/b2b/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#31 /home/namespace/public_html/b2b/index.php(90): Mage::run('', 'store')
#32 {main}
答案 0 :(得分：0)
自Magento 1.5或1.6以来，Mysql4类已弃用，仅用于向后兼容。如果你查看他们的源代码，你会发现他们扩展了“新”资源模型而没有任何自己的代码：
class Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Collection extends Mage_Catalog_Model_Resource_Product_Collection
{
}
现在这个工作正常，直到扩展类型暗示旧类，但Magento实际上实例化了新类。
尝试获取与当前Magento版本兼容的更新版本的扩展程序。如果这不可能，您可以通过替换所有Mysql4类型提示来自行修补。