Magento 2：更新購物車頁面上的產品列表頁面中的數量

Question

我在產品列表（list.phtml）上添加了數量輸入，是否有任何方法可以使用購物車頁面或小型購物車上的更新數量實現解決方案？不只是添加到購物車，但更新產品列表中的數量。

問候馬特

Answer 1

您可以使用這樣的事情：

<?php $postParams = $block->getAddToCartPostParams($_product); ?> 

<form data-role="tocart-form" onsubmit="return false;" action="<?php /* @escapeNotVerified */ echo $postParams['action']; ?>" method="post"> 
    <?php echo $block->getBlockHtml('formkey')?> 
    <input type="hidden" name="product" value="<?php /* @escapeNotVerified */ echo $postParams['data']['product']; ?>"> 
    <input type="hidden" name="<?php /* @escapeNotVerified */ echo Action::PARAM_NAME_URL_ENCODED; ?>" value="<?php /* @escapeNotVerified */ echo $postParams['data'][Action::PARAM_NAME_URL_ENCODED]; ?>"> 
    <input type="text" name="qty" id="qty" class="qty" value="1"/> 
    <button type="submit" 
      title="<?php echo $block->escapeHtml(__('Add to Cart')); ?>" 
      class="action tocart primary" 
      <span class="label"> 
       <?php /* @escapeNotVerified */ echo __('Add to Cart') ?> 
      </span> 
    </button>             
</form> 

但這隻會用簡單的產品合作。

Answer 2

替換下面的代碼在mincart.phtml和deply：

<?php 
/** 
* Copyright © 2016 Magento. All rights reserved. 
* See COPYING.txt for license details. 
*/ 

// @codingStandardsIgnoreFile 

/** @var $block \Magento\Checkout\Block\Cart\Sidebar */ 
?> 

<div data-block="minicart" class="minicart-wrapper"> 
    <a class="action showcart" href="<?php /* @escapeNotVerified */ echo $block->getShoppingCartUrl(); ?>" 
     data-bind="scope: 'minicart_content'"> 
     <span class="text"><?php /* @escapeNotVerified */ echo __('Warenkorb'); ?></span> 
     <span class="counter qty empty" 
       data-bind="css: { empty: !!getCartParam('summary_count') == false }, blockLoader: isLoading"> 
      <span class="counter-number"><!-- ko text: getCartParam('summary_count') --><!-- /ko --></span> 
      <span class="counter-label"> 
      <!-- ko if: getCartParam('summary_count') --> 
       <!-- ko text: getCartParam('summary_count') --><!-- /ko --> 
       <!-- ko i18n: 'items' --><!-- /ko --> 
      <!-- /ko --> 
      </span> 
     </span> 
    </a> 
    <?php if ($block->getIsNeedToDisplaySideBar()): ?> 
     <div class="block block-minicart empty" 
      data-role="dropdownDialog" 
      data-mage-init='{"dropdownDialog":{ 
       "appendTo":"[data-block=minicart]", 
       "triggerTarget":".showcart", 
       "timeout": "2000", 
       "closeOnMouseLeave": false, 
       "closeOnEscape": true, 
       "triggerClass":"active", 
       "parentClass":"active", 
       "buttons":[]}}'> 
       <div class="menu-main-title-mobile min-cart-mob"> 
          <a href="#" class="close-mega-menu"><?php echo __('< Zurück') ?></a> 
          <h4><span><?php echo __('Warenkorb') ?></span></h4>      
         </div> 
      <div id="minicart-content-wrapper" data-bind="scope: 'minicart_content'"> 
      <?php /* <div class="menu-main-title"> 
        <h3>Ihr EGLO Warenkorb</h3> 
        <span><a href="#"> Liste hochladen</a></span> 
        <a href="#" class="close-mega-menu">Schliessen x</a> 
       </div> */ ?> 
       <!-- ko template: getTemplate() --><!-- /ko --> 

      </div> 
      <?php //echo $block->getChildHtml('minicart.addons'); ?> 
     </div> 
    <?php endif ?> 
    <script> 
     window.checkout = <?php /* @escapeNotVerified */ echo \Zend_Json::encode($block->getConfig()); ?>; 
    </script> 
    <script type="text/x-magento-init"> 
    { 
     "[data-block='minicart']": { 
      "Magento_Ui/js/core/app": <?php /* @escapeNotVerified */ echo $block->getJsLayout();?> 
     }, 
     "*": { 
      "Magento_Ui/js/block-loader": "<?php /* @escapeNotVerified */ echo $block->getViewFileUrl('images/loader-1.gif'); ?>" 
     } 
    } 
    </script> 
</div> 
<script> 

/* Minicart Plus Minus Script */ 
function cartplus(elementId) { 
    var qty = document.getElementById('cart-item-'+elementId+'-qty').value; 
    qty = parseInt(qty) + 1; 
    document.getElementById('cart-item-'+elementId+'-qty').value = qty; 
    document.getElementById('update-cart-item-'+elementId).style.display = "block"; 

    } 

function cartminus(elementId){ 
    var qty = document.getElementById('cart-item-'+elementId+'-qty').value;  
    qty = parseInt(qty) - 1; 
    if (qty < 0) 
     qty = 0; 
    document.getElementById('cart-item-'+elementId+'-qty').value = qty; 
    document.getElementById('update-cart-item-'+elementId).style.display = "block"; 
    } 

/* Minicart Plus Minus Script End */ 

</script>