woocommerce自定义结帐字段添加费用订购ajax

I'm trying to ad a custom fee to the order total upon checkout. I've added a checkbox within woocommerce

我试图在结账时向订单总额支付定制费用。我在woocommerce中添加了一个复选框

add_action( 'woocommerce_after_checkout_billing_form', 'add_box_option_to_checkout' );
function add_box_option_to_checkout( $checkout ) {
    echo '<div id="message_fields">';
    woocommerce_form_field( 'add_gift_box', array(
        'type'          => 'checkbox',
        'class'         => array('add_gift_box form-row-wide'),

        'label'         => __('Ilość pudełek ozdobnych - 25 PLN/szt'),
        'placeholder'   => __(''),
        ), $checkout->get_value( 'add_gift_box' ));
}

Included a custom js file which schould handle the event

包含一个可以处理事件的自定义js文件

jQuery( document ).ready(function( $ ) {

  $('#add_gift_box').click(function(){
        var data = {
            action: 'woocommerce_add_gift_box',
            state: '200',
        };
        jQuery.ajax({
            type: 'POST',
            url: wc_checkout_params.ajax_url,
            data: data,
            success: function (code) {
                console.log(code);
                jQuery('body').trigger('update_checkout');
            },
            dataType: 'html'
        });

  });
});

And a php fee handling function

还有一个php费用处理功能

function woo_add_cart_fee( $data ){
  if ( is_admin() && ! defined( 'DOING_AJAX' ) || ! $_POST )  return;

  $extracost = 0;
  if (isset($_POST['state'])) {
    $extracost = intval($_POST['state']);
  }
  WC()->cart->add_fee( 'Ozdobne pudełka:', $extracost );

}
add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' );


add_action('wp_ajax_woocommerce_add_gift_box', 'woo_add_cart_fee', 10);
add_action('wp_ajax_nopriv_woocommerce_add_gift_box', 'woo_add_cart_fee', 10);

For some reasons the value of $_POST['state'] isn't added, the function works when I give a hard coded value, I've tried many option but cant get this to work.

由于某些原因，$ _POST ['state']的值没有添加，当我给出一个硬编码值时，该函数有效，我尝试了很多选项，但是无法使其工作。

I've seen similar posts but none of them had the answer.

我见过类似的帖子，但没有一个人有答案。

2 个解决方案

#1

The post data is sent by the AJAX functions in 'post_data', serialized. So to get the value of your checkbox, you only need to parse_str() this!

后期数据由'post_data'中的AJAX函数发送，序列化。因此，要获取复选框的值，您只需要parse_str（）这个！

parse_str( $_POST['post_data'], $post_data );

then you can get your 'add_gift_box' option from $post_data['add_gift_box']. Note that upon order completion, this 'post_data' element is not available anymore and everything is in $_POST.

然后你可以从$ post_data ['add_gift_box']获得'add_gift_box'选项。请注意，订单完成后，此'post_data'元素不再可用，所有内容都在$ _POST中。

Complete example, based on your code:

完整示例，基于您的代码：

1) adding the checkbox to the checkout

1）将复选框添加到结帐中

add_action( 'woocommerce_after_checkout_billing_form', 'add_box_option_to_checkout' );
function add_box_option_to_checkout( $checkout ) {
    echo '<div id="message_fields">';
    woocommerce_form_field( 'add_gift_box', array(
        'type'          => 'checkbox',
        'class'         => array('add_gift_box form-row-wide'),

        'label'         => __('Ilość pudełek ozdobnych - 25 PLN/szt'),
        'placeholder'   => __(''),
        ), $checkout->get_value( 'add_gift_box' ));
        echo '</div>';
}

2) script to update cart when checkbox clicked (no need for extra AJAX requests!)

2）单击复选框时更新购物车的脚本（无需额外的AJAX请求！）

add_action( 'wp_footer', 'woocommerce_add_gift_box' );
function woocommerce_add_gift_box() {
    if (is_checkout()) {
    ?>
    <script type="text/javascript">
    jQuery( document ).ready(function( $ ) {
        $('#add_gift_box').click(function(){
            jQuery('body').trigger('update_checkout');
        });
    });
    </script>
    <?php
    }
}

3) action to add the fee

3）增加费用的行动

add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' );
function woo_add_cart_fee( $cart ){
        if ( ! $_POST || ( is_admin() && ! is_ajax() ) ) {
        return;
    }

    if ( isset( $_POST['post_data'] ) ) {
        parse_str( $_POST['post_data'], $post_data );
    } else {
        $post_data = $_POST; // fallback for final checkout (non-ajax)
    }

    if (isset($post_data['add_gift_box'])) {
        $extracost = 25; // not sure why you used intval($_POST['state']) ?
        WC()->cart->add_fee( 'Ozdobne pudełka:', $extracost );
    }

}

#2

This is awesome!! Thanks a lot. I've changed it a little bit to add a percentage instead. I know this is not a better answer but I have no reputation to push your answer up. For whoever was stuck like me..

这太棒了！！非常感谢。我改了一点就改了一个百分比。我知道这不是一个更好的答案，但我没有声誉推动你的答案。对于像我这样被困的人

add_action( 'woocommerce_cart_calculate_fees', 'woo_add_cart_fee' ); function woo_add_cart_fee( $cart ){
  global $woocommerce;

    if ( ! $_POST || ( is_admin() && ! is_ajax() ) ) {
    return;
}

if ( isset( $_POST['post_data'] ) ) {
    parse_str( $_POST['post_data'], $post_data );
} else {
    $post_data = $_POST; // fallback for final checkout (non-ajax)
}

if (isset($post_data['add_gift_box'])) {

$percentage = 0.01;
$surcharge = ( $woocommerce->cart->cart_contents_total + $woocommerce->cart->shipping_total ) * $percentage;    
$woocommerce->cart->add_fee( 'Surcharge', $surcharge, true, '' );
}

}

#1