Magento产品系列选择所有属性

Question

我正在尝试创建一个选择特定产品及其属性的模型。

$products = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*'); 

但可悲的是，虽然我以前做过这数百次，我们有Magento的时刻......

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

表明 - > addAttributeToSelect无视我。

SELECT `e`.* FROM `catalog_product_entity` AS `e` 

当然，在典型的Magento时尚中，没有任何异常或错误。

我打电话我自己Adminhtml网格块这些方法，禁用缓存（尽管我知道Magento的仍然缓存时，缓存被禁用某些型号的数据（我删除VAR /缓存）。

我不能连做：

->addAttributeToSelect('name'); 

我真的开始失去我的耐心借助这个平台，我已经使用了4个月，它似乎比浪费它节省更多的时间任何帮助将是一个生命的救星！

Answer 1

您需要深入了解Magento以了解如何Magento ORM的工作原理（EAV structure和collections实际上是如何工作的）。

为了让所有的产品属性，这是正确的：

$collection = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*'); 

你所缺少的是事实，Magento的，不会给你所有的集合相关的查询时，你这样做：

echo $collection->getSelect()//note: you don't need __toString(), read about OOP in PHP5 

当您运行的代码只是为了让收集的Magento将只运行以下查询：

SELECT `e`.* FROM `catalog_product_entity` AS `e` 

当你开始通过收集循环：

$collection = Mage::getModel('catalog/product')->getCollection()->addAttributeToSelect('*'); 
foreach($collection as $p) { 
    echo $p->getName()."\n";//you can use in here any getCustomAttribute method 
} 

的Magento将运行额外的查询来获得所有属性和值：有关该查询在不同的上下文中运行

SELECT `main_table`.`entity_type_id`, `main_table`.`attribute_code`, `main_table`.`attribute_model`, `main_table`.`backend_model`, `main_table`.`backend_type`, `main_table`.`backend_table`, `main_table`.`frontend_model`, `main_table`.`frontend_input`, `main_table`.`frontend_label`, `main_table`.`frontend_class`, `main_table`.`source_model`, `main_table`.`is_required`, `main_table`.`is_user_defined`, `main_table`.`default_value`, `main_table`.`is_unique`, `main_table`.`note`, `additional_table`.* FROM `eav_attribute` AS `main_table` 
INNER JOIN `catalog_eav_attribute` AS `additional_table` ON additional_table.attribute_id = main_table.attribute_id WHERE (main_table.entity_type_id = 10) 

SELECT `t_d`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` AS `default_value`, `t_s`.`value` AS `store_value`, IF(t_s.value_id IS NULL, t_d.value, t_s.value) AS `value` FROM `catalog_product_entity_text` AS `t_d` 
LEFT JOIN `catalog_product_entity_text` AS `t_s` ON t_s.attribute_id = t_d.attribute_id AND t_s.entity_id = t_d.entity_id AND t_s.store_id = 1 WHERE (t_d.entity_type_id = 10) AND (t_d.entity_id IN (16, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 74, 75, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166)) AND (t_d.attribute_id IN ('496', '507', '531', '97', '494', '509', '499', '492', '498', '104', '495', '497', '936', '500', '476', '506')) AND (t_d.store_id = 0) UNION ALL SELECT `t_d`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` AS `default_value`, `t_s`.`value` AS `store_value`, IF(t_s.value_id IS NULL, t_d.value, t_s.value) AS `value` FROM `catalog_product_entity_int` AS `t_d` 
LEFT JOIN `catalog_product_entity_int` AS `t_s` ON t_s.attribute_id = t_d.attribute_id AND t_s.entity_id = t_d.entity_id AND t_s.store_id = 1 WHERE (t_d.entity_type_id = 10) AND (t_d.entity_id IN (16, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 74, 75, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166)) AND (t_d.attribute_id IN ('272', '510', '875', '877', '903', '501', '935', '952', '904', '102', '513', '110', '859', '862', '508', '863', '525', '502', '107', '860', '273', '274', '526', '861')) AND (t_d.store_id = 0) UNION ALL SELECT `t_d`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` AS `default_value`, `t_s`.`value` AS `store_value`, IF(t_s.value_id IS NULL, t_d.value, t_s.value) AS `value` FROM `catalog_product_entity_decimal` AS `t_d` 
LEFT JOIN `catalog_product_entity_decimal` AS `t_s` ON t_s.attribute_id = t_d.attribute_id AND t_s.entity_id = t_d.entity_id AND t_s.store_id = 1 WHERE (t_d.entity_type_id = 10) AND (t_d.entity_id IN (16, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 74, 75, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166)) AND (t_d.attribute_id IN ('100', '960', '503', '943', '99', '567', '270', '101')) AND (t_d.store_id = 0) UNION ALL SELECT `t_d`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` AS `default_value`, `t_s`.`value` AS `store_value`, IF(t_s.value_id IS NULL, t_d.value, t_s.value) AS `value` FROM `catalog_product_entity_varchar` AS `t_d` 
LEFT JOIN `catalog_product_entity_varchar` AS `t_s` ON t_s.attribute_id = t_d.attribute_id AND t_s.entity_id = t_d.entity_id AND t_s.store_id = 1 WHERE (t_d.entity_type_id = 10) AND (t_d.entity_id IN (16, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 74, 75, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166)) AND (t_d.attribute_id IN ('940', '571', '271', '562', '878', '106', '879', '906', '873', '703', '105', '103', '942', '941', '96', '836', '931', '874', '876', '905', '109', '880', '493', '881', '481', '570')) AND (t_d.store_id = 0) UNION ALL SELECT `t_d`.`entity_id`, `t_d`.`attribute_id`, `t_d`.`value` AS `default_value`, `t_s`.`value` AS `store_value`, IF(t_s.value_id IS NULL, t_d.value, t_s.value) AS `value` FROM `catalog_product_entity_datetime` AS `t_d` 
LEFT JOIN `catalog_product_entity_datetime` AS `t_s` ON t_s.attribute_id = t_d.attribute_id AND t_s.entity_id = t_d.entity_id AND t_s.store_id = 1 WHERE (t_d.entity_type_id = 10) AND (t_d.entity_id IN (16, 17, 18, 19, 20, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 41, 42, 44, 45, 46, 47, 48, 49, 51, 52, 53, 54, 74, 75, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166)) AND (t_d.attribute_id IN ('572', '573', '704', '705', '568', '569')) AND (t_d.store_id = 0) 

要了解更多的创建空脚本，只加载Mage::app()并使用集合并在Varien_Db_Adapter_Pdo_Mysql中将$ _logAllQueries设置为true。附加信息：here。