woocommerce自定义结帐字段以添加费用以订购ajax [英] woocommerce custom checkout field to add fee to order ajax

问题描述

我正在尝试在结帐时向订单总额添加自定义费用. 我在woocommerce中添加了一个复选框

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

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' ));
}

包含一个自定义的js文件，该文件可以处理事件

Included a custom js file which schould handle the event

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'
        });

  });
});

还有一个php费用处理功能

And a php fee handling function

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);

由于某些原因，未添加$ _POST ['state']的值，当我给出硬编码值时，该函数有效，我尝试了很多选项，但无法使其正常工作.

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.

我见过类似的帖子，但是没有一个答案.

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

推荐答案

post数据由AJAX函数在"post_data"中发送，并进行了序列化.因此，要获取复选框的值，只需要将其parse_str()！

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!

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

然后您可以从$post_data['add_gift_box']获取"add_gift_box"选项.请注意，完成订单后，此"post_data"元素不再可用，并且所有内容都在$_POST中.

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.

基于您的代码的完整示例:

Complete example, based on your code:

1)将复选框添加到结帐

1) adding the checkbox to the checkout

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)脚本，可在单击复选框时更新购物车(不需要额外的AJAX请求！)

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

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)添加费用的操作

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 );
    }

}

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