我在向订单管理员添加自定义结帐字段时遇到问题（可能还有电子邮件，我还没有）。除了编码问题，我大部分时间都遵循https://www.kathyisawesome.com/woocommerce-customize-checkout-fields/ - 到目前为止我的代码：
我添加＆＃39; x＆＃39;假定购物车中有一个产品，基于产品数量的$ fields [＆＃39; extra_fields＆＃39;]金额。我正在与kia_display_order_data_in_admin（）进行斗争 - 无论我做什么，我都会一直在get_country（）。我已经在pastebin中获得了非动态变化（基于购物车中有两个产品） - 我试图让这部分动态的其他一切都无法正常工作。
我看到一些选项可以在管理员中加载这些动态字段，但我无法到达那里：
再次获取产品数量并将$ i附加到标准字段名称的末尾
以某种方式获取所有字段的数组，以便我可以提取$ fields [＆＃39; extra_fields＆＃39;]
通过order_id
还有别的吗？
编辑：在Kia的帮助下，我对代码进行了一些修改，现在它将动态添加自定义结帐字段。这一直一直运行到管理员订单屏幕，但在尝试更新管理员rtspcsrc
编辑2：请参阅下面接受的答案，因为这适用于我的问题
答案 0 :(得分：4)
您确定Product Add-Ons可能不适合这个吗？如果没有，我认为你需要的是自定义输入类型。这应该可以帮到你。
/* Add a new checkout field
*
* These is our base field group, later on, depending on product quanitiy, $key = 'passenger_title_1' for example
*
*/
function supreme_filter_checkout_fields($fields){
$fields['extra_fields'] = array(
'passenger_details' => array(
'type' => 'passenger_details',
'required' => false,
'label' => __( 'Passenger Details' )
),
);
return $fields;
}
add_filter( 'woocommerce_checkout_fields', 'supreme_filter_checkout_fields' );
什么是＆＃34; passenger_details＆＃34;输入？好吧，我们要定义这一点，因为woocommerce_form_field()有一个问题，以防该类型与WooCommerce的任何默认设置都不匹配。见'woocommerce_form_field_' . $args['type']
以下是我们要为每位乘客列出您想要的字段组的地方。
function supreme_filter_checkout_field_group( $field, $key, $args, $value ){
$op_cart_count = WC()->cart->get_cart_contents_count();
$html = '';
for ( $i = 1; $i <= $op_cart_count; $i++) {
$html .= woocommerce_form_field( "passenger_details[$i][title]", array(
"type" => "select",
"return" => true,
"value" => "",
"options" => array( "mr" => __( "Mr" ), "mrs" => __( "Mrs" ), "miss" => __( "Miss" ) ),
"required" => false,
"label" => __( "Title" )
)
);
$html .= woocommerce_form_field( "passenger_details[$i][first_name]", array(
"type" => "text",
"return" => true,
"value" => "",
"required" => false,
"label" => __( "First Name" )
)
);
$html .= woocommerce_form_field( "passenger_details[$i][middle_name]", array(
"type" => "text",
"return" => true,
"value" => "",
"required" => false,
"label" => __( "Middle Name" )
)
);
$html .= woocommerce_form_field( "passenger_details[$i][last_name]", array(
"type" => "text",
"return" => true,
"value" => "",
"required" => false,
"label" => __( "Last Name" )
)
);
$html .= woocommerce_form_field( "passenger_details[$i][date_of_birth]", array(
"type" => "text",
"return" => true,
"value" => "",
"class" => array("date-of-birth form-row-wide"),
"required" => false,
"label" => __("Date of Birth"),
"placeholder" => __("Select Date"),
"options" => array("" => __("Date of Birth", "woocommerce" ))
)
);
$html .= woocommerce_form_field( "passenger_details[$i][dietary_required]", array(
"type" => "select",
"return" => true,
"value" => "",
"class" => array("dietary-required form-row-wide"),
"options" => array( "" => __( "Please Select" ), "y" => __( "Yes" ), "n" => __( "No" ) ),
"required" => false,
"label" => __( "Dietary Requirements?" )
)
);
$html .= woocommerce_form_field( "passenger_details[$i][dietary_preference]", array(
"type" => "select",
"return" => true,
"value" => "",
"class" => array("dietary-requirements form-row-wide"),
"options" => array( "v" => __( "Vegetarian" ), "GF" => __( "Gluten Free" ) ),
"required" => false,
"label" => __( "Meal Preferences" )
)
);
}
return $html;
}
add_filter( 'woocommerce_form_field_passenger_details', 'supreme_filter_checkout_field_group', 10, 4 );
// display the extra field on the checkout form
function supreme_extra_checkout_fields(){
$checkout = WC()->checkout();
foreach ( $checkout->checkout_fields['extra_fields'] as $key => $field ) :
woocommerce_form_field( $key, $field, $checkout->get_value( $key ) );
endforeach;
}
add_action( 'woocommerce_checkout_after_customer_details' ,'supreme_extra_checkout_fields' );
编辑处理清理和保存数据。请注意，我更改了上面的supreme_filter_checkout_field_group函数并删除了ID参数。
~~使用id参数，我们可以动态设置输入名称。生成的标记应该类似于：~~
<input type="text" class="input-text " name="last_name" id="passenger_details[2]last_name" placeholder="" value="">
这是错的。 name参数需要是一个数组！名称是从woocommerce_form_field()的第一个参数中提取的。 ID与我们的需求无关，但需要保持唯一以保持正确的标记。这是我们需要的结果，现在应该通过上述修改得到：
<input type="text" class="input-text " name="passenger_details[2][last_name]" id="passenger_details[2][last_name]" placeholder="" value="">
现在提交时，$_POST['passenger_data']应该是数组的阵列（乘客）（乘客详情）。在我编辑之后，它就是！
现在，为了处理这些数据并清理乘客数据中的各个字段，我们创建了一个清理自定义字段类型的功能：
/**
* Sanitize our custom field
*
*/
function supreme_custom_process_checkout_field_passenger_details( $posted ){
$clean = array();
foreach( $posted as $passenger ){
$details = supreme_custom_checkout_clean_passenger_details( $passenger );
if( ! empty( $details ) ){
$clean[] = $details;
}
}
return $clean;
}
add_filter( 'woocommerce_process_checkout_passenger_details_field', 'supreme_custom_process_checkout_field_passenger_details' );
function supreme_custom_checkout_clean_passenger_details( $passenger = array() ){
$details = array();
if( isset( $passenger["title"] ) ){
$details['title'] = sanitize_text_field( $passenger["title"] );
}
if( isset( $passenger["first_name"] ) ){
$details['first_name'] = sanitize_text_field( $passenger["first_name"] );
}
if( isset( $passenger["middle_name"] ) ){
$details['middle_name'] = sanitize_text_field( $passenger["middle_name"] );
}
if( isset( $passenger["last_name"] ) ){
$details['last_name'] = sanitize_text_field( $passenger["last_name"] );
}
if( isset( $passenger["date_of_birth"] ) ){
$details['date_of_birth'] = $date = preg_replace("([^0-9/])", "", $passenger["date_of_birth"] );
}
if( isset( $passenger["dietary_required"] ) ){
$details['dietary_required'] = $passenger["dietary_required"] == "y" ? "y": "n";
}
if( isset( $passenger["dietary_preference"] ) && isset( $passenger["dietary_required"] ) && $passenger["dietary_required"] == "y" ){
$details['dietary_preference'] = $passenger["dietary_preference"] == "GF" ? "GF": "v";
}
return $details;
}
现在已经消毒了，更新只是保存帖子元素的问题：
/**
* update_post_meta
*
*/
function supreme_custom_checkout_field_update_order_meta( $order_id, $posted ){
if( ! empty( $posted["passenger_details"] ) ){
update_post_meta( $order_id, "_passenger_details", $posted["passenger_details"] );
} else {
delete_post_meta( $order_id, "_passenger_details" );
}
}
add_action( 'woocommerce_checkout_update_order_meta', 'supreme_custom_checkout_field_update_order_meta', 10, 2 );
现在，我们肯定已将所有字段保存在_passenger_details post元组密钥中，并且我们可以在需要显示它时循环遍历该数组。例如，它位于管理员订单页面上：
// display the extra data in the order admin panel
function kia_display_order_data_in_admin( $order ){
$passenger_details = get_post_meta( $order->id, "_passenger_details", true );
if( ! empty( $passenger_details ) ) {
$passenger_defaults = array(
"title" => "",
"first_name" => "",
"middle_name" => "",
"last_name" => "",
"date_of_birth" => "",
"dietary_required" => "",
"dietary_preference" => ""
);
?>
<div class="passenger_data">
<h4><?php _e( "Passenger Details", "your-slug" ); ?></h4>
<?php
$i = 1;
foreach( $passenger_details as $passenger ){
$passenger = wp_parse_args( $passenger, $passenger_defaults );
echo "<p><strong>" . sprintf( __( "Passenger #%s", "your-slug" ), $i ) . "</strong>" . "<br/>";
echo __( "Title", "your-slug" ) . ' : ' . $passenger["title"] . "<br/>";
echo __( "First Name", "your-slug" ) . ' : ' . $passenger["first_name"] . "<br/>";
echo __( "Middle Name", "your-slug" ) . ' : ' . $passenger["middle_name"] . "<br/>";
echo __( "Last Name", "your-slug" ) . ' : ' . $passenger["last_name"] . "<br/>";
echo __( "Date of Birth", "your-slug" ) . ' : ' . $passenger["date_of_birth"] . "<br/>";
echo __( "Dietary Required", "your-slug" ) . ' : ' . $passenger["dietary_required"] . "<br/>";
echo __( "Dietary Preference", "your-slug" ) . ' : ' . $passenger["dietary_preference"] . "<br/>";
echo "</p>";
$i++;
}
?>
</div>
<?php }
}
add_action( "woocommerce_admin_order_data_after_order_details", "kia_display_order_data_in_admin" );
现在仍然留下了谢谢你的页面和电子邮件，但数据就在那里。