在Woocommerce訂單中顯示一個自定義字段值編輯視圖

Question

我有一個和here類似的東西：我不明白爲什麼這個自定義字段的值沒有保存。這裏是我的代碼：

add_filter('woocommerce_checkout_fields' , 'altri_campi'); 

function altri_campi($fields) { 
$fields['billing']['codice_fiscale'] = array(
     'class'  => array('form-row-wide'), 
     'label'  => __('Codice Fiscale', 'woocommerce'), 
     'placeholder' => _x('Scrivere anche il Codice Fiscale', 'placeholder', 'woocommerce'), 
     'required' => true, 
     'class'  => array('form-row-wide') 
    ); 

    return $fields; 

}  

// like LoizTheAztec above 
    add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta', 10, 1); 
    function my_custom_checkout_field_update_order_meta($order_id) { 
     if (! empty($_POST['codice_fiscale'])) { 
      update_post_meta($order_id, 'Codice Fiscale', sanitize_text_field($_POST['codice_fiscale'])); 
     } 
    } 

    // then I'm expecting that custom field value will be saved somehow, but won't 

    add_action('woocommerce_admin_order_data_after_shipping_address', 'my_custom_checkout_field_display_admin_order_meta', 10, 1); 

    function my_custom_checkout_field_display_admin_order_meta($order){ 
     echo '<p><strong>'.__('Codice Fiscale', 'woocommerce').':</strong> ' . get_post_meta($order->get_id(), '_codice_fiscale', true) . '</p>'; 
    } 

元字段被正確保存和打印，但我不能在訂單數據視圖中添加自定義字段值。

我在做什麼錯了，以及如何在訂單編輯視圖中顯示此自定義字段值？

否則，我希望在客戶的結算和運輸數據後發現的文本是無效的，因爲我只讀取了最新代碼段的html部分。

Answer 1

這裏是正確的註釋和解釋代碼：

// Creating and displaying the custom checkout field in checkout page 
add_filter('woocommerce_checkout_fields' , 'altri_campi'); 
function altri_campi($fields) { 
    $fields['billing']['codice_fiscale'] = array(
     'class'  => array('form-row-wide'), 
     'label'  => __('Codice Fiscale', 'woocommerce'), 
     'placeholder' => _x('Scrivere anche il Codice Fiscale', 'placeholder', 'woocommerce'), 
     'required' => true, 
     'class'  => array('form-row-wide') 
    ); 
    return $fields; 
} 

// Saving the custom checkout field value in the order meta data 
add_action('woocommerce_checkout_update_order_meta', 'my_custom_checkout_field_update_order_meta', 10, 1); 
function my_custom_checkout_field_update_order_meta($order_id) { 
    if (! empty($_POST['codice_fiscale'])){ 
     update_post_meta($order_id, 'codice_fiscale', sanitize_text_field($_POST['codice_fiscale'])); 

     // get the customer ID 
     $customer_id = get_post_meta($order_id, '_customer_user', true); 

     // Update customer user data 
     update_user_meta($customer_id, 'codice_fiscale', true); 
    } 
} 

// Displaying the custom checkout field value in the order edit page (backend) 
add_action('woocommerce_admin_order_data_after_shipping_address', 'custom_checkout_field_display_admin_order_meta', 10, 1); 
function custom_checkout_field_display_admin_order_meta($order){ 
    $codice_fiscale = get_post_meta($order->get_id(), 'codice_fiscale', true); 
    if(! empty($codice_fiscale)) 
     echo '<p><strong>'.__('Codice Fiscale', 'woocommerce').':</strong> ' . $codice_fiscale . '</p>'; 
} 

代碼放在您的活動子主題（或主題）的function.php文件或也以任何插件文件。

測試和工作。您將獲得在後端訂單編輯頁面類似（下面的地址）：