Php 将案例或类似语句添加到_productCollection->；在Magento中添加AttributeToSort（）
一旦用户选择价格下拉列表以首先显示最便宜的，我将尝试编辑我的产品在Magento产品列表中的订购方式。这显示列出时顶部有0的价格，如下所示：Php 将案例或类似语句添加到_productCollection->；在Magento中添加AttributeToSort（）,php,sql,magento,Php,Sql,Magento,一旦用户选择价格下拉列表以首先显示最便宜的，我将尝试编辑我的产品在Magento产品列表中的订购方式。这显示列出时顶部有0的价格，如下所示： Product 4 £0 Product 5 £0 Product 1 £50 Product 2 £65 Product 3 £80 目前它将显示如下： Product 1 £50 Product 2 £65 Product 3 £80 Product 4 £0 Product 5 £0 我已经设法编辑了文件/app/code/core/Mage/C
Product 4 £0
Product 5 £0
Product 1 £50
Product 2 £65
Product 3 £80
Product 1 £50
Product 2 £65
Product 3 £80
Product 4 £0
Product 5 £0
/app/code/core/Mage/Catalog/Block/Product/List.php中的\u getProductCollection（）
方法（不用担心，我已经复制到本地），并添加了以下几行：
$orderFilterType = $this->getRequest()->getParam('order');
$dirFilterType = $this->getRequest()->getParam('dir');
if( isset( $orderFilterType ) && $orderFilterType == 'price' && isset( $dirFilterType ) && $dirFilterType == 'asc' ) {
$this->_productCollection = $layer->getProductCollection();
$order_field = 'new_price_for_sort';
$this->_productCollection->getSelect()->joinLeft( array('a' => 'catalog_product_entity_price'), 'a.product_id=e.entity_id AND a.attibute_id=PRICE or SPECIAL PRICE ATTRIBUTE ID', array('new_price_for_sort' => new Zend_Db_Expr('IF(a.value > 0,1, 0)') ) );
$this->_productCollection->getSelect()->reset(Zend_Db_Select::ORDER);
$dir = 'DESC';
if ( !$this->_productCollection->isEnabledFlat() ) {
$this->_productCollection->setOrder($order_field, $dir);
} else {
$this->_productCollection->getSelect()->order($order_field . ' ' . $dir);
}
$this->_productCollection->setOrder('price', $dir);
} else { $this->_productCollection = $layer->getProductCollection(); }
这意味着，每当有人选择价格时，asc会从下拉列表中筛选，然后使用addAttributeToSort
添加价格排序，这很好，但我无法确定如何使用此选项将0定价的产品排到底部
在SQL中，我通常使用CASE语句，例如：
SELECT * FROM table ORDER BY CASE price WHEN 0 then 1 ELSE 0 END, price
但是，我不知道如何在上面的代码中实现类似的内容。就像我之前说过的：
$order_field = 'new_price_for_sort';
$collection->getSelect()->joinLeft(array('a' => 'catalog_product_entity_price'), // or here you will need Price Index Table Name if you have Groupped or configurable products. But need to remember that non-simple products always have 0 price and MAX_PRICE/MIN_PRICE should be used then
'a.product_id=e.entity_id AND a.attibute_id=PRICE or SPECIAL PRICE ATTRIBUTE ID', // or here you will not require attribute_id condition if you are using INDEX TABLE
array('new_price_for_sort' => new Zend_Db_Expr('IF(a.value > 0,1, 0)'), // which mean that in new field we will have price if it's not 0, and will have big integer is real price is zero.
));
}
// now we are reseting current order by
$collection->getSelect()->reset(Zend_Db_Select::ORDER);
// and creating new order by new field, but with saving direction of order
$dir = 'DESC'; // as we need to have products WITH price first, and after that WITHOUT price
if (!$collection->isEnabledFlat()) {
$collection->setOrder($order_field, $dir);
} else {
$collection->getSelect()->order($order_field . ' ' . $dir);
}
//and now add Order by price with keeping direction that user have choosed
$collection->setOrder('price', $arr['dir']);
这是你和我合并的代码
$orderFilterType = $this->getRequest()->getParam('order');
$dirFilterType = $this->getRequest()->getParam('dir');
if( isset( $orderFilterType ) && $orderFilterType == 'price' && isset( $dirFilterType ) && $dirFilterType == 'asc' ) {
$this->_productCollection = $layer->getProductCollection();
$order_field = 'new_price_for_sort';
$this->_productCollection->getSelect()->joinLeft(array('a' => 'catalog_product_entity_price'), // or here you will need Price Index Table Name if you have Groupped or configurable products. But need to remember that non-simple products always have 0 price and MAX_PRICE/MIN_PRICE should be used then
'a.product_id=e.entity_id AND a.attibute_id=PRICE or SPECIAL PRICE ATTRIBUTE ID', // or here you will not require attribute_id condition if you are using INDEX TABLE
array('new_price_for_sort' => new Zend_Db_Expr('IF(a.value > 0,1, 0)'), // which mean that in new field we will have price if it's not 0, and will have big integer is real price is zero.
));
}
// now we are reseting current order by
$this->_productCollection->getSelect()->reset(Zend_Db_Select::ORDER);
// and creating new order by new field, but with saving direction of order
$dir = 'DESC'; // as we need to have products WITH price first, and after that WITHOUT price
if (!$this->_productCollection->isEnabledFlat()) {
$this->_productCollection->setOrder($order_field, $dir);
} else {
$this->_productCollection->getSelect()->order($order_field . ' ' . $dir);
}
//and now add Order by price with keeping direction that user have choosed
$this->_productCollection->setOrder('price', $arr['dir']);
} else {
$this->_productCollection = $layer->getProductCollection();
}
我看到了你之前的答案，但这在我所做的工作中是如何工作的？在我的代码中应该放在哪里？试着把我的代码放在if（isset（$orderFilterType）&&$orderFilterType=='price'&&isset（$dirFilterType）&&$dirFilterType=='asc'）{}else之间{