如何通过选择下拉属性过滤magento集合？ [英] How do I filter a magento collection by a select drop-down attribute?

问题描述

在magento中，我有一个名为cl_designer的属性，它是一个选择下拉选项。我想过滤其上的产品集合，像这样：

In magento, I have an attribute called cl_designer, which is a select drop-down option. I want to filter the products collection on it, like this:

$collection = Mage::getModel('catalog/product')->getCollection();
$collection->addAttributeToFilter('cl_designer', array('like' => $filter));

但它不工作！当我使用$ collection-> getselect（）打印出查询时，我看到它正在比较$ filter和catalog_product_entity_int.value。但这是错误的，因为对于选择选项，catalog_product_entity_int.value是option_id，而不是值。

But it doesn't work! When I print out the query with $collection->getselect(), I see that it is comparing $filter to catalog_product_entity_int.value. But this is wrong, because for select options, catalog_product_entity_int.value is the option_id, NOT the value. So how do I make it filter on the actual option value?

推荐答案

假设一个名为<$ c $的示例下拉属性c> size 包含以下选项：

Assuming an example drop-down attribute named size contains the following options:

id    value
22    'small'
23    'medium'
24    'large'

收集'medium'选项：

按产品（自定义）下拉属性的选项值过滤产品集合：

To filter a product collection by option value of a product's (custom) drop-down attribute:

$sAttributeName = 'size';
$mOptionValue = 'medium';
$collection = Mage::getModel('catalog/product')->getCollection()
    ->addAttributeToSelect('*')
    ->addFieldToFilter(
        $sAttributeName,
        array(
            'eq' => Mage::getResourceModel('catalog/product')
                        ->getAttribute($sAttributeName)
                        ->getSource()
                        ->getOptionId($mOptionValue)
        )
    );

按下拉选项ID过滤

按产品（自定义）下拉属性的选项ID过滤产品集合：

Filter by drop-down option id

To filter a product collection by a option id of a product's (custom) drop-down attribute:

$sAttributeName = 'size';
$mOptionId = 23;
$collection = Mage::getModel('catalog/product')->getCollection()
    ->addAttributeToSelect('*')
    ->addFieldToFilter(
        $sAttributeName,
        array('eq' => $mOptionId)
    );

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