Php 用于更新 WooCommerce 管理产品列表中库存数量的自定义输入字段

您混淆了产品库存状态和产品库存数量.

现在，该功能需要jQuery/JavaScript/AJAX，才能从这些定制输入字段更新产品库存数量.

代码:

// Add input fields to stock status column
add_action( 'manage_product_posts_custom_column', 'product_stock_quantity_column_content', 10, 2 );
function product_stock_quantity_column_content( $column, $product_id ) {
    if ( $column === 'is_in_stock' ) {
        global $product;

        if( $product->get_manage_stock() ) {
            printf('<div style="margin-bottom:5px;width:120px">
            <input type="number" name="stock_qty-%d" value="%d" style="width:80px">
            <button type="button" class="update-qty button button-primary" data-id="%d">&#8635;</button>
            <span class="message-%d" style="display:none"></span></div>', 
            $product_id, $product->get_stock_quantity('edit'), $product_id, $product_id);
        }
    }     
}

// WP Admin Ajax receiver
add_action('wp_ajax_update_stock_quantity', 'update_stock_quantity_ajax');
function update_stock_quantity_ajax() {
    if (isset($_POST['product_id']) && isset($_POST['update_qty'])) {
        $product = wc_get_product(intval($_POST['product_id']));

        $product->set_stock_quantity(intval($_POST['update_qty']));
        echo $product->save(); // We return the product Id when saved, as a response.
    }
    wp_die(); // Exit silently (Always at the end to avoid an Error 500)
}

// jQuery Ajax
add_action('admin_footer', 'update_stock_quantity_js');
function update_stock_quantity_js() {
    global $pagenow, $typenow;

    if( 'edit.php' === $pagenow && 'product' === $typenow ) :
    ?>
    <script id="update-stock-qty" type="text/javascript">
        jQuery(function($) {
            $('body').on('click', 'button.update-qty', function() {
                const productID = $(this).data('id'),
                      updateQty = $('input[name=stock_qty-'+productID+']').val();
                $.ajax({
                    url:  '<?php echo admin_url( 'admin-ajax.php' ); ?>',
                    type: 'POST',
                    data: {
                        'action':     'update_stock_quantity',
                        'product_id': productID,
                        'update_qty': updateQty,
                    },
                    success: function(response) {
                        if ( response > 0 ) {
                            $('.message-'+response).html(' Updated').css('color','green').fadeIn().delay(1500).fadeOut();
                        }
                    },
                    error: function(error) {
                        $('.message-'+productID).html(' Error').css('color','green').fadeIn().delay(1500).fadeOut();
                        console.log(error);
                    }
                });
            });
        });
    </script>
    <?php
    endif;
}

代码位于您的子主题的unctions.php文件中(或在插件中).经过测试，效果良好.

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