WooCommerce自定义字段不保存到数据库...有时

Question

我已经在Woo-commerce网站上订购了大约10,000个订单。约0.4％未保存所需的自定义字段“custom_location”。我不知道这是如何可能的，无法找到重现的方式。

此外，我使用该字段的选定值将辅助值保存到数据库。即使数据库中的'custom_location'为空，辅助值也会正确保存。显然，$ _POST ['custom_location']包含有效的数据，但它没有保存...为什么？

// Here I create the custom select field 
add_filter('woocommerce_checkout_fields' , 'custom_override_checkout_fields'); 
function custom_override_checkout_fields($fields) { 
    // <select> options 
    $args = array('post_type' => 'MY_CUSTOM_POST_TYPE', 
       'posts_per_page' => -1, 
       'order' => 'ASC', 
       'post_status' => 'publish', 
       'suppress_filters' => true); 
    $locations = get_posts($args); 
    $ops = array('default' => 'Select a location'); 
    foreach($locations as $l) { 
     $ops[$l->ID] = __($l->post_title, 'woocommerce'); 
    } 
    // Add 'custom_location' field to 'shipping' 
    $fields['shipping'] = array('custom_location' => array(
     'label'  => __('Location', 'woocommerce'), 
     'placeholder' => _x('', 'empty', 'woocommerce'), 
     'required' => true, 
     'clear'  => false, 
     'type'  => 'select', 
     'options'  => $ops 
     )) 
     + $fields['shipping']; 

    return $fields; 
} 
// Save related data 
add_action('woocommerce_checkout_update_order_meta', 'save_extra_data'); 
function save_extra_data($order_id) { 
    $loc = $_POST['custom_location']; 

    // This was saved correctly to DB even when 'custom_location' is null in DB! 
    $meta = get_post_meta($loc, 'extra-shipping-data', true); 
    update_post_meta($order_id, '_shipping_extra', $meta); 
} 

Answer 1

如果客户账单和送货地址相同，您的位置将被保存为空。在您的代码中，缺少locations的声明。只需稍作更改，您就可以最大限度地减少代码和工作量。确保你用你的选择替换ops。

add_filter('woocommerce_checkout_fields' , 'custom_override_checkout_fields'); 
function custom_override_checkout_fields($fields) { 
    // <select> options 
    $ops = array('default' => 'Select a location', 'location1' => 'Location 1'); 

    // Add 'custom_location' field to 'shipping' 
    $fields['shipping'] = array('shipping_custom_location' => array(
     'label'  => __('Location', 'woocommerce'), 
     'placeholder' => _x('', 'empty', 'woocommerce'), 
     'required' => true, 
     'clear'  => false, 
     'type'  => 'select', 
     'options'  => $ops 
    )) 
    + $fields['shipping']; 

    return $fields; 
}