WooCommerce WC()->session->set not working-CodePudding

I want to add some of the fields from a form into custom fields on a product so I can use them into an API call after payment is made. I have a redirection on my form that gets to the checkout page and add the product in the basket, code below:

<script>
document.addEventListener( 'wpcf7mailsent', function( event ) {
    if (jQuery("input[type='checkbox'][name='try[]']").is(':checked')) {
        location = 'http://www.thelittlegym.co.za/checkout/?add-to-cart=2506';
    } 
}, false );
</script>

Then, I have some code in my function.php to save the form data in the WC session. I had to add declare the new session otherwise the set function didn't work. If I do the init then I get an error saying "wc_empty_cart();" isn't defined (this function is from the WooCommerce plugin.

add_action('wpcf7_before_send_mail', 'send_form_data_to_wc_session', 5, 1);
function send_form_data_to_wc_session($contact_form) {
    $submission = WPCF7_Submission::get_instance();
    if($submission) {
        $posted_data = $submission->get_posted_data();
        if (!empty($posted_data['try'][0])) {
            // Set data to WooCommerce session
            WC()->session = new WC_Session_Handler();
            // WC()->session->init();
            WC()->session->set('cf7_posted_data', $posted_data);
        }
    }
}

Finally, I'm trying to retrieve the session data with the code below. The var dump just returns NULL.

add_action('woocommerce_checkout_before_customer_details', 'wc_save_cf7_data_to_order', 10, 1);
function wc_save_cf7_data_to_order($order_id) {
    
    $posted_data = WC()->session->get('cf7_posted_data');
    var_dump($posted_data);
    
    if(!empty($posted_data)) {
        foreach($posted_data as $key => $data) {
            echo '<b>', $key, ' : </b> ', $data, '<br />';
        }

        WC()->session->__unset('cf7_posted_data');
    }
}

I believe the WC session set isn't working. I'm looking in the console for the Session Storage and can only see "wc_cart_hash_xxxxxxx", "wc_fragment_xxxxxxx" and "wc_cart_created".

Any idea how I can go ahead to debug this?

CodePudding user response：

I've found an alternative solution on another topic, which solved my problem even if it doesn't explain why the code above didn't work.

add_action('wpcf7_before_send_mail', 'send_form_data_to_wc_session', 5, 1);
function send_form_data_to_wc_session($contact_form) {
    $submission = WPCF7_Submission::get_instance();
    if($submission) {
        $posted_data = $submission->get_posted_data();
        if (!empty($posted_data['try'][0])) {
            // Set data to Session
            session_start();//place this at the top of all code
            $_SESSION['cf7_posted_data']=$posted_data;
        }
    }
}

and to retrieve:

add_action('woocommerce_checkout_before_customer_details', 'wc_save_cf7_data_to_order', 10, 1);

function wc_save_cf7_data_to_order($order_id) {

    session_start();
    $posted_data =  $_SESSION['cf7_posted_data'];
    
    var_dump($posted_data);

}