I solved the my issue. this code may help others in future.
// Display a custom checkout field
add_action( 'woocommerce_checkout_before_terms_and_conditions', 'custom_checkbox_checkout_field' );
function custom_checkbox_checkout_field() {
$value = WC()->session->get('add_a_product');
woocommerce_form_field( 'cb_add_product', array(
'type' => 'checkbox',
'label' => ' ' . __('Please check here to get VIP Membership'),
'class' => array('form-row-wide'),
), $value == 'yes' ? true : false );
}
// The jQuery Ajax request
add_action( 'wp_footer', 'checkout_custom_jquery_script' );
function checkout_custom_jquery_script() {
// Only checkout page
if( is_checkout() && ! is_wc_endpoint_url() ):
// Remove "ship_different" custom WC session on load
if( WC()->session->get('add_a_product') ){
WC()->session->__unset('add_a_product');
}
if( WC()->session->get('product_added_key') ){
WC()->session->__unset('product_added_key');
}
// jQuery Ajax code
?>
<script type="text/javascript">
jQuery( function($){
if (typeof wc_checkout_params === 'undefined')
return false;
$('form.checkout').on( 'change', '#cb_add_product', function(){
var value = $(this).prop('checked') === true ? 'yes' : 'no';
$.ajax({
type: 'POST',
url: wc_checkout_params.ajax_url,
data: {
'action': 'add_a_product',
'add_a_product': value,
},
success: function (result) {
$('body').trigger('update_checkout');
//console.log(result);
}
});
if(value == 'no'){
window.location.reload();
}
});
});
</script>
<?php
endif;
}
// The WordPress Ajax PHP receiver
add_action( 'wp_ajax_add_a_product', 'checkout_ajax_add_a_product' );
add_action( 'wp_ajax_nopriv_add_a_product', 'checkout_ajax_add_a_product' );
function checkout_ajax_add_a_product() {
if ( isset($_POST['add_a_product']) ){
WC()->session->set('add_a_product', esc_attr($_POST['add_a_product']));
echo $_POST['add_a_product'];
}
die();
}
// Add remove free product
add_action( 'woocommerce_before_calculate_totals', 'adding_removing_specific_product' );
function adding_removing_specific_product( $cart ) {
if (is_admin() && !defined('DOING_AJAX'))
return;
if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
return;
$has_sub = wcs_user_has_subscription( '', '179', 'active' );
$product_id = 179;
if( WC()->session->get('add_a_product') == 'yes' && ! WC()->session->get('product_added_key') ){
// HERE the specific Product ID
foreach ( $cart->get_cart() as $cart_item ) {
// get the product id (or the variation id)
$product_idnew = $cart_item['data']->get_id();
// GET THE NEW PRICE (code to be replace by yours)
$new_price = get_post_meta( $product_idnew, 'pro_price_extra_info', true );
$old_price = $cart_item['data']->get_price();
if($new_price == NULL){
$cart_item['data']->set_price( floatval( $old_price ) );
} else {
$cart_item['data']->set_price( floatval( $new_price ) );
}
}
$cart_item_key = $cart->add_to_cart( $product_id );
WC()->session->set('product_added_key', $cart_item_key);
} elseif( WC()->session->get('add_a_product') == 'no' && WC()->session->get('product_added_key') ) {
$cart_item_key = WC()->session->get('product_added_key');
$cart->remove_cart_item( $cart_item_key );
WC()->session->__unset('product_added_key');
}elseif ( $has_sub ) {
foreach ( $cart->get_cart() as $cart_item ) {
// get the product id (or the variation id)
$product_idnew = $cart_item['data']->get_id();
// GET THE NEW PRICE (code to be replace by yours)
$new_price = get_post_meta( $product_idnew, 'pro_price_extra_info', true );
$cart_item['data']->set_price( floatval( $new_price ) );
}
}
}
function woo_in_cart($product_id) {
global $woocommerce;
foreach($woocommerce->cart->get_cart() as $key => $val ) {
$_product = $val['data'];
if($product_id == $_product->id ) {
return true;
}
}
return false;
}
add_action( 'woocommerce_cart_loaded_from_session', 'adding_vip_product' );
function adding_vip_product( $cart ) {
$product_id = 179;
if(woo_in_cart($product_id) ) {
foreach ( $cart->get_cart() as $cart_item ) {
// get the product id (or the variation id)
$product_idnew = $cart_item['data']->get_id();
// GET THE NEW PRICE (code to be replace by yours)
$new_price = get_post_meta( $product_idnew, 'pro_price_extra_info', true );
if($new_price != 0){
$cart_item['data']->set_price( floatval( $new_price ) );
}
}
}
}