php - 将 WooCommerce 订单总量保存为 Shipstation 的自定义字段

Question

我一直在编写一个 WP 插件，用于计算订单的平方英寸总体积，并通过自定义字段将其发送到 Shipstation:

<?php
   

  global $woocommerce;
  $items = $woocommerce->cart->get_cart();

  //Debugging function
  function console_log( $data ){
    echo '<script>';
    echo 'console.log('. json_encode( $data ) .')';
    echo '</script>';
  }
  console_log('$items');
  //Custoom field for shipstation
  add_filter( 'woocommerce_shipstation_export_custom_field_2', 'shipstation_custom_field_2' );

  //Function for processing volume
  function shipstation_custom_field_2() {
    $cart_prods_in3 = array();
    foreach($items as $item => $values) { 
        $_product =  wc_get_product( $values['data']->get_id());
        //GET GET PRODUCT IN3 
        $prod_in3 = $_product->get_length() * 
                   $_product->get_width() * 
                   $_product->get_height();
        $prod_in3 = $prod_m3 * $values['quantity'];
        //PUSH RESULT TO ARRAY
        array_push($cart_prods_in3, $prod_in3);
    } 
    return $cart_prods_in3; // Key for your custom field
}

console_log('shipstation_custom_field_2');

?>

我通过 SFTP 将它上传到站点文件并显示在 WP 上，但是当我单击激活时，我收到一个 fatal error :

Fatal error: Uncaught Error: Call to a member function get_cart() on null in /nas/content/live/sfmstaging/wp-content/plugins/boxCalc/boxCalc.php:10 Stack trace: #0 /nas/content/live/sfmstaging/wp-admin/includes/plugin.php(2299): include() #1 /nas/content/live/sfmstaging/wp-admin/plugins.php(191): plugin_sandbox_scrape('boxCalc/boxCalc...') #2 {main} thrown in /nas/content/live/sfmstaging/wp-content/plugins/boxCalc/boxCalc.php on line 10

我是否正确提取购物车数据？ Woocommerce global 有问题吗？

Answer 1

请注意，购物车是您无法获得的实时客户对象。
现在在 ShipStation plugin documentation woocommerce_shipstation_export_custom_field_2过滤器 Hook 只是返回现有订单自定义字段的元键。
这意味着您需要在客户下订单时将购物车总量保存为自定义订单元数据。
请尝试以下操作:

// Custom function to get the volume of a product
function get_product_volume( $product ) {
    return $product->get_length() * $product->get_width() * $product->get_height();
}

// Save the cart total volume as custom order meta data
add_action('woocommerce_checkout_create_order', 'save_order_total_volume');
function save_order_total_volume( $order ) {
    $total_volume = 0; // Initializing

    // Loop through order items
    foreach( $order->get_items() as $item ){
        $item_volume   = get_product_volume($item->get_product()) * $item->get_quantity();

        // For product variations (if volume is not accessible get the volume of the parent variabl product)
        if( ! $item_volume ) {
            $total_volume += get_product_volume( wc_get_product( $item->get_product_id() ) ) * $item->get_quantity();
        } else {
            $total_volume += $item_volume;
        }
    }
    $order->update_meta_data( '_total_volume', $total_volume ); // Save total volume as custom order meta data
}

// Add total volume custom field meta key for export to ship station
add_filter( 'woocommerce_shipstation_export_custom_field_2', 'shipstation_custom_field_2' );
function shipstation_custom_field_2( $custom_field_key ) {
    return '_total_volume';
}

代码位于事件子主题(或事件主题)的 functions.php 文件或插件文件中。测试和工作。