本文显示了如何从Magento 2.x的前端产品详细信息页面中的可配置产品中获取关联的简单产品ID和数量（数量）/库存。
–以下代码假定产品详细信息页面中已使用色板。
–假设您的可配置产品有两个可配置的属性（颜色和尺寸）。
–单击任何颜色样本，然后单击尺寸样本：
–然后，将显示该特定颜色和尺寸相关产品的可用库存数量。
您可以在此文件的开头添加以下代码Javascript和PHP：app / design / frontend / Theme_Namespace / Theme_Name / Magento_Catalog / templates / product / view / addtocart.phtml。
这是完整的代码：
<script type="text/javascript">
requirejs(['jquery','underscore'], function(jQuery,_){
jQuery(window).load(function(){
jQuery( ".product-options-wrapper div" ).click(function() {
selpro();
});
});
function selpro () {
var selected_options = {};
jQuery('div.swatch-attribute').each(function(k,v){
var attribute_id = jQuery(v).attr('attribute-id');
var option_selected = jQuery(v).attr('option-selected');
//console.log(attribute_id, option_selected);
if(!attribute_id || !option_selected){ return;}
selected_options[attribute_id] = option_selected;
});
var product_id_index = jQuery('[data-role=swatch-options]').data('mageSwatchRenderer').options.jsonConfig.index;
var found_ids = [];
//console.log(product_id_index);
jQuery.each(product_id_index, function(product_id,attributes){
//console.log(product_id);
var productIsSelected = function(attributes, selected_options){
return _.isEqual(attributes, selected_options);
}
if(productIsSelected(attributes, selected_options)){
found_ids.push(product_id);
}
});
//console.log(found_ids);
if (found_ids.length) {
var selected_product_id = found_ids[0];
jQuery('.myli').css('display','none');
jQuery('#div'+selected_product_id).toggle();
}
}
});
</script> <?php
$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$product = $objectManager->get('Magento\Framework\Registry')->registry('current_product');//get current product
$productTypeInstance = $product->getTypeInstance();
if ($product->getTypeId() == \Magento\ConfigurableProduct\Model\Product\Type\Configurable::TYPE_CODE) {
$usedProducts = $productTypeInstance->getUsedProducts($product);
?>
<ul>
<?php foreach ($usedProducts as $child) { ?>
<li class="myli" id="div<?php echo $child->getId()?>" style="display:none;list-style:none">
<?php
$productStockObj = $objectManager->get('Magento\CatalogInventory\Api\StockRegistryInterface')->getStockItem($child->getId());
echo "We have ".round($productStockObj->getData('qty'))." items in stock!";
?>
</li>
<?php } ?>
</ul>
<?php
} else {
$productStockObj = $objectManager->get('Magento\CatalogInventory\Api\StockRegistryInterface')->getStockItem($product->getId());
echo "We have ".round($productStockObj->getData('qty'))." items in stock!";
}
?>参考文献：
– Magento 2获取可配置产品中的选定简单产品ID
– 显示可配置产品magento 2上的可用库存
– Magento 2：提取当前选定的产品ID或SKU
