基于在 Woocommerce應答代碼中啟用百分比費用的添加結帳復選框欄位，我有一個自定義復選框，我需要在該復選框上向客戶提供折扣。
我正在嘗試應用 0.03 美元 x 產品數量的自定義折扣，例如
如果數量為 50，則折扣為 50 x $0.03 = $1.5
現在，它從購物車總計中扣除 0.03 美元。任何人都可以幫助我實作所需的結果嗎？
這是我的代碼嘗試：
// Add a custom checkbox fields after billing fields
add_action( 'woocommerce_after_checkout_billing_form', 'add_custom_checkout_checkbox', 20 );
function add_custom_checkout_checkbox(){
// Add a custom checkbox field
woocommerce_form_field( 'discount30', array(
'type' => 'checkbox',
'label' => __(' Senior'),
'class' => array( 'form-row-wide' ),
), '' );
}
// Remove "(optional)" label on "Installement checkbox" field
add_filter( 'woocommerce_form_field' , 'remove_order_comments_optional_fields_label', 10, 4 );
function remove_order_comments_optional_fields_label( $field, $key, $args, $value ) {
// Only on checkout page for Order notes field
if( 'discount30' === $key && is_checkout() ) {
$optional = ' <span >(' . esc_html__( 'optional', 'woocommerce' ) .
')</span>';
$field = str_replace( $optional, '', $field );
}
return $field;
}
// jQuery - Ajax script
add_action( 'wp_footer', 'checkout_fee_script' );
function checkout_fee_script() {
// Only on Checkout
if( is_checkout() && ! is_wc_endpoint_url() ) :
if( WC()->session->__isset('enable_fee') )
WC()->session->__unset('enable_fee')
?>
<script type="text/javascript">
jQuery( function($){
if (typeof wc_checkout_params === 'undefined')
return false;
$('form.checkout').on('change', 'input[name=discount30]', function(e){
var fee = $(this).prop('checked') === true ? '1' : '';
$.ajax({
type: 'POST',
url: wc_checkout_params.ajax_url,
data: {
'action': 'enable_fee',
'enable_fee': fee,
},
success: function (result) {
$('body').trigger('update_checkout');
},
});
});
});
</script>
<?php
endif;
}
// Get Ajax request and saving to WC session
add_action( 'wp_ajax_enable_fee', 'get_enable_fee' );
add_action( 'wp_ajax_nopriv_enable_fee', 'get_enable_fee' );
function get_enable_fee() {
if ( isset($_POST['enable_fee']) ) {
WC()->session->set('enable_fee', ($_POST['enable_fee'] ? true : false) );
}
die();
}
// Add a custom 3 Cents Discount
add_action( 'woocommerce_cart_calculate_fees', 'custom_discount', 20, 1 );
function custom_discount( $cart ) {
// Only on checkout
if ( ( is_admin() && ! defined( 'DOING_AJAX' ) ) || ! is_checkout() )
return;
$discount = -0.03;
if( WC()->session->get('enable_fee') )
$cart->add_fee( __( 'Discount', 'woocommerce'), ( $discount ) );
}
uj5u.com熱心網友回復：
要根據購物車中的商品數量確定折扣，您可以使用 WC()->cart->get_cart_contents_count();
然后可以將其應用于woocommerce_cart_calculate_fees動作掛鉤。
所以你得到：
// Add a custom checkbox fields after billing fields
function action_woocommerce_after_checkout_billing_form( $checkout ) {
// Add a custom checkbox field
woocommerce_form_field( 'discount30', array(
'type' => 'checkbox',
'label' => __( ' Senior', 'woocommerce' ),
'class' => array( 'form-row-wide' ),
), '' );
}
add_action( 'woocommerce_after_checkout_billing_form', 'action_woocommerce_after_checkout_billing_form', 10, 1 );
// Remove "(optional)" label on "discount30" field
function filter_woocommerce_form_field( $field, $key, $args, $value ) {
// Only on checkout page
if ( $key === 'discount30' && is_checkout() ) {
$optional = ' <span >(' . esc_html__( 'optional', 'woocommerce' ) . ')</span>';
$field = str_replace( $optional, '', $field );
}
return $field;
}
add_filter( 'woocommerce_form_field' , 'filter_woocommerce_form_field', 10, 4 );
// jQuery - Ajax script
function action_wp_footer() {
// Only on Checkout
if ( is_checkout() && ! is_wc_endpoint_url() ) :
if ( WC()->session->__isset('enable_fee') )
WC()->session->__unset('enable_fee')
?>
<script type="text/javascript">
jQuery( function($){
if ( typeof wc_checkout_params === 'undefined' )
return false;
$( 'form.checkout' ).on( 'change', 'input[name=discount30]', function(e) {
var fee = $(this).prop('checked') === true ? '1' : '';
$.ajax({
type: 'POST',
url: wc_checkout_params.ajax_url,
data: {
'action': 'enable_fee',
'enable_fee': fee,
},
success: function (result) {
$('body').trigger('update_checkout');
},
});
});
});
</script>
<?php
endif;
}
add_action( 'wp_footer', 'action_wp_footer' );
// Get Ajax request and saving to WC session
function get_enable_fee() {
if ( isset($_POST['enable_fee']) ) {
WC()->session->set( 'enable_fee', ( $_POST['enable_fee'] ? true : false ) );
}
die();
}
add_action( 'wp_ajax_enable_fee', 'get_enable_fee' );
add_action( 'wp_ajax_nopriv_enable_fee', 'get_enable_fee' );
// Add a custom 3 Cents Discount
function action_woocommerce_cart_calculate_fees( $cart ) {
// Only on checkout
if ( ( is_admin() && ! defined( 'DOING_AJAX' ) ) || ! is_checkout() )
return;
// Get number of items in the cart.
$items_in_cart = $cart->get_cart_contents_count();
// Calculate
$discount = 0.03 * $items_in_cart;
// Apply discount
if ( WC()->session->get('enable_fee') ) {
$cart->add_fee( __( 'Discount', 'woocommerce' ), -$discount );
}
}
add_action( 'woocommerce_cart_calculate_fees', 'action_woocommerce_cart_calculate_fees', 10, 1 );
注意：獲取購物車中的產品數量與購物車中的商品數量相反
改變
// Get number of items in the cart.
$items_in_cart = $cart->get_cart_contents_count();
// Calculate
$discount = 0.03 * $items_in_cart;
到
// Products in cart
$products_in_cart = count( $cart->get_cart() );
// Calculate
$discount = 0.03 * $products_in_cart;
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