magento - 无法在产品集合上使用 type_id 加载和过滤

Question

我想覆盖目录/层模型的函数prepareProductCollection($collection)。

因为，我只想展示简单的产品，所以我想做:

 public function prepareProductCollection($collection)
    {
        $collection
           ->addAttributeToSelect(Mage::getSingleton('catalog/config')->getProductAttributes())
           ->addMinimalPrice()
           ->addFinalPrice()
           ->addTaxPercents()
           ->addUrlRewrite($this->getCurrentCategory()->getId());

        Mage::getSingleton('catalog/product_status')->addVisibleFilterToCollection($collection);
        Mage::getSingleton('catalog/product_visibility')->addVisibleInCatalogFilterToCollection($collection);

        $collection
         ->addAttributeToSelect('type_id')
         ->addAttributeToFilter('type_id','simple');
       echo $collection->getSelect()->__toString();

    }

但是当我这样做时，我有这个错误:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'e.type_id' in 'where clause'

Trace:
#0 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Varien/Db/Statement/Pdo/Mysql.php(110): Zend_Db_Statement_Pdo->_execute(Array)
#1 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Zend/Db/Statement.php(300): Varien_Db_Statement_Pdo_Mysql->_execute(Array)
#2 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Zend/Db/Adapter/Abstract.php(479): Zend_Db_Statement->execute(Array)
#3 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Zend/Db/Adapter/Pdo/Abstract.php(238): Zend_Db_Adapter_Abstract->query('SELECT FLOOR((R...', Array)
#4 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Varien/Db/Adapter/Pdo/Mysql.php(419): Zend_Db_Adapter_Pdo_Abstract->query('SELECT FLOOR((R...', Array)
#5 /Users/Ditchou/Documents/ProjetsWeb/lolote/lib/Zend/Db/Adapter/Abstract.php(808): Varien_Db_Adapter_Pdo_Mysql->query(Object(Varien_Db_Select), Array)
#6 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Resource/Layer/Filter/Price.php(274): Zend_Db_Adapter_Abstract->fetchPairs(Object(Varien_Db_Select))
#7 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(158): Mage_Catalog_Model_Resource_Layer_Filter_Price->getCount(Object(Mage_Catalog_Model_Layer_Filter_Price), 10)
#8 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(115): Mage_Catalog_Model_Layer_Filter_Price->getRangeItemCounts(10)
#9 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(314): Mage_Catalog_Model_Layer_Filter_Price->getPriceRange()
#10 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(151): Mage_Catalog_Model_Layer_Filter_Price->_getItemsData()
#11 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(120): Mage_Catalog_Model_Layer_Filter_Abstract->_initItems()
#12 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Layer/Filter/Abstract.php(109): Mage_Catalog_Model_Layer_Filter_Abstract->getItems()
#13 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Block/Layer/Filter/Abstract.php(132): Mage_Catalog_Model_Layer_Filter_Abstract->getItemsCount()
#14 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/design/frontend/decostore/default/template/catalog/layer/view.phtml(49): Mage_Catalog_Block_Layer_Filter_Abstract->getItemsCount()
#15 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(241): include('/Users/Ditchou/...')
#16 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/decost...')
#17 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#18 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Core_Block_Template->_toHtml()
#19 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Text/List.php(43): Mage_Core_Block_Abstract->toHtml()
#20 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Core_Block_Text_List->_toHtml()
#21 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Abstract.php(582): Mage_Core_Block_Abstract->toHtml()
#22 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Abstract.php(526): Mage_Core_Block_Abstract->_getChildHtml('left', true)
#23 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/design/frontend/decostore/default/template/page/2columns-left.phtml(19): Mage_Core_Block_Abstract->getChildHtml('left')
#24 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(241): include('/Users/Ditchou/...')
#25 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(272): Mage_Core_Block_Template->fetchView('frontend/decost...')
#26 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Template.php(286): Mage_Core_Block_Template->renderView()
#27 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Block/Abstract.php(863): Mage_Core_Block_Template->_toHtml()
#28 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Model/Layout.php(555): Mage_Core_Block_Abstract->toHtml()
#29 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Controller/Varien/Action.php(390): Mage_Core_Model_Layout->getOutput()
#30 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/controllers/CategoryController.php(159): Mage_Core_Controller_Varien_Action->renderLayout()
#31 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Controller/Varien/Action.php(419): Mage_Catalog_CategoryController->viewAction()
#32 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(250): Mage_Core_Controller_Varien_Action->dispatch('view')
#33 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Controller/Varien/Front.php(176): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#34 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#35 /Users/Ditchou/Documents/ProjetsWeb/lolote/app/Mage.php(683): Mage_Core_Model_App->run(Array)
#36 /Users/Ditchou/Documents/ProjetsWeb/lolote/index.php(87): Mage::run('', 'store')
#37 {main}

错误似乎发生在这里:
#6/Users/Ditchou/Documents/ProjetsWeb/lolote/app/code/core/Mage/Catalog/Model/Resource/Layer/Filter/Price.php(274): Zend_Db_Adapter_Abstract->fetchPairs(Object(Varien_Db_Select))

我不明白，因为当我只是做

$collectionSimple = Mage::getResourceModel('catalog/product_collection')
     ->addAttributeToFilter('type_id', array('eq' => 'simple'));

sql请求的回声给了我:

SELECT `e`.*, `cat_index`.`position` AS `cat_index_position`, `price_index`.`price`, `price_index`.`tax_class_id`, `price_index`.`final_price`, IF(price_index.tier_price IS NOT NULL, LEAST(price_index.min_price, price_index.tier_price), price_index.min_price) AS `minimal_price`, `price_index`.`min_price`, `price_index`.`max_price`, `price_index`.`tier_price` FROM `catalog_product_entity` AS `e` INNER JOIN `catalog_category_product_index` AS `cat_index` ON cat_index.product_id=e.entity_id AND cat_index.store_id=1 AND cat_index.visibility IN(2, 4) AND cat_index.category_id='3' INNER JOIN `catalog_product_index_price` AS `price_index` ON price_index.entity_id = e.entity_id AND price_index.website_id = '1' AND price_index.customer_group_id = 0 WHERE (`e`.`type_id` = 'simple')

有用。

为什么层模型的集合不同？

Answer 1

你确定这是你得到的错误？在 Magento 1.7.x 中，当我替换 prepareProductCollection 时使用上面提供的方法体，我得到 此 错误

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'e.min_price' in 'where clause'

那是因为我的 prepareProductCollection没有设置与原始相同的属性。首先，确保你的。如果您使用基于配置的重写来执行此操作，请调用

parent::prepareProductCollection($collection);

在您的方法开始时。如果您使用的是 local或 community代码池覆盖，那么您需要从 core 复制/粘贴代码文件。在 1.7.1 中，它看起来像这样

    $collection
        ->addAttributeToSelect(Mage::getSingleton('catalog/config')->getProductAttributes())
        ->addMinimalPrice()
        ->addFinalPrice()
        ->addTaxPercents()
        ->addUrlRewrite($this->getCurrentCategory()->getId());

    Mage::getSingleton('catalog/product_status')->addVisibleFilterToCollection($collection);
    Mage::getSingleton('catalog/product_visibility')->addVisibleInCatalogFilterToCollection($collection);

    $collection
        ->addAttributeToSelect('type_id')
        ->addAttributeToFilter('type_id','simple');

如果这对您没有帮助，请跟踪您的调用堆栈 - 如果您的错误确实是 1054 Unknown column 'e.type_id' in 'where clause'那么我的猜测是您在某处运行了一些自定义代码，将集合的过滤器复制到 不同 收藏。

此外，您可以通过使用获取集合的主 SQL 查询

echo $collection->getSelect()->__toString();

这应该会给你足够的调试信息来开始。

更新:好的，根据上面的新信息，这似乎只在有价格过滤器和/或指数处于特定状态时才起作用。

这是你的问题。看看这个调用堆栈行

#7 app/code/core/Mage/Catalog/Model/Layer/Filter/Price.php(158):    Mage_Catalog_Model_Resource_Layer_Filter_Price->getCount(Object(Mage_Catalog_Model_Layer_Filter_Price), 10)

如果你跳转到 getCount方法，您将看到对 _getSelect 的调用

#File: app/code/core/Mage/Catalog/Model/Resource/Layer/Filter/Price.php 
public function getCount($filter, $range)
{
    $select = $this->_getSelect($filter);

如果你看 _getSelect 的定义,

#partial method reproduction
#File: app/code/core/Mage/Catalog/Model/Resource/Layer/Filter/Price.php
protected function _getSelect($filter)
{    
    $collection = $filter->getLayer()->getProductCollection();
    $collection->addPriceData($filter->getCustomerGroupId(), $filter->getWebsiteId());
    if (!is_null($collection->getCatalogPreparedSelect())) {
        $select = clone $collection->getCatalogPreparedSelect();
    } else {
        $select = clone $collection->getSelect();
    }

你会看到 Magento 是 克隆 从集合中选择，然后修改它以从索引表中选择

    // processing FROM part
    $priceIndexJoinPart = $fromPart[Mage_Catalog_Model_Resource_Product_Collection::INDEX_TABLE_ALIAS];
    $priceIndexJoinConditions = explode('AND', $priceIndexJoinPart['joinCondition']);
    $priceIndexJoinPart['joinType'] = Zend_Db_Select::FROM;
    $priceIndexJoinPart['joinCondition'] = null;
    $fromPart[Mage_Catalog_Model_Resource_Product_Collection::MAIN_TABLE_ALIAS] = $priceIndexJoinPart;
    unset($fromPart[Mage_Catalog_Model_Resource_Product_Collection::INDEX_TABLE_ALIAS]);
    $select->setPart(Zend_Db_Select::FROM, $fromPart);
    foreach ($fromPart as $key => $fromJoinItem) {
        $fromPart[$key]['joinCondition'] = $this->_replaceTableAlias($fromJoinItem['joinCondition']);
    }
    $select->setPart(Zend_Db_Select::FROM, $fromPart);

由于索引表没有 type_id列，上述库存 Magento 代码与您的更改不兼容。如果我要继续做这件事，我会

转向基于重写的方法

创建一个重写，添加您的 type_id过滤器代替您的覆盖

在 _getSelect 上创建第二次重写上面的方法检查了 type_id 的选择过滤器，如果找到，将其删除

或者，您可以尝试找到一种不同的方法来重写更接近它使用位置的集合对象。

祝你好运!