Dynamic checkout custom fields per persons and items in Woocommerce bookings - php

Question

For a bookings website I'm trying to create a function which makes it possible to add an attendee list, based on the amount of persons. I've already got the code for a single booking, thanks to LoicTheAztec. That part is working fine.
I also need the same functionality for multiple bookings. How can I achieve this?
Here is the code:
//* Add a new checkout field
add_filter( 'woocommerce_checkout_fields', 'ppp_filter_checkout_fields' );
function ppp_filter_checkout_fields($fields){
$fields['extra_fields'] = array(
'participant_details' => array(
'type' => 'participant_details',
'required' => false,
'label' => __( 'Participant Details' )
),
);
// Add a "persons" hidden input field
foreach( WC()->cart->get_cart() as $cart_item ) {
$persons = $cart_item['booking']['_persons'][0];
}
echo '<input type="hidden" name="persons" value="' . $persons . '">';
return $fields;
}
//* Add the field to the checkout
add_filter( 'woocommerce_form_field_participant_details', 'ppp_filter_checkout_field_group', 10, 4 );
function ppp_filter_checkout_field_group( $field, $key, $args, $value ){
$op_cart_count = WC()->cart->get_cart_contents_count();
$items = WC()->cart->get_cart();
foreach($items as $item) {
$person = $item['booking']['_persons'][0];
}
if ($person > 1) {
$html = '';
$html .= "<h3>Deelnemers</h3>";
for ( $i = 1; $i < $person; $i++) {
$counter = $i + 1;
$html .= "Deelnemer ". $counter . "<br>";
$html .= woocommerce_form_field( "participant_details[$i][full_name]", array(
"type" => "text",
"return" => true,
"value" => "",
"required" => true,
"label" => __( "Naam" )
)
);
$html .= woocommerce_form_field( "participant_details[$i][email_address]", array(
"type" => "email",
"return" => true,
"value" => "",
"required" => true,
"label" => __( "Emailadres" )
)
);
}
return $html;
}
}
//* display the extra field on the checkout form
add_action( 'woocommerce_checkout_after_customer_details' ,'ppp_extra_checkout_fields' );
function ppp_extra_checkout_fields(){
$checkout = WC()->checkout();
foreach ( $checkout->checkout_fields['extra_fields'] as $key => $field ) :
woocommerce_form_field( $key, $field, $checkout->get_value( $key ) );
endforeach;
}
//* Validate custom checkout fields
add_action( 'woocommerce_after_checkout_validation', 'ppp_checkout_field_participant_details_validation', 20, 2 );
function ppp_checkout_field_participant_details_validation( $data, $errors ){
if ( isset( $_POST['persons'] ) && $_POST['persons'] > 1 ){
for ( $i = 1, $j = 2; $i < esc_attr( $_POST['persons'] ); $i++, $j++ ) {
if ( empty( $_POST['participant_details'][$i]['full_name'] ) )
$errors->add( 'participant_'.$i.'_full_name', __( "Please fill in the participant $j full name" ), 'error' );
if ( empty( $_POST['participant_details'][$i]['email_address'] ) )
$errors->add( 'participant_'.$i.'_email_address', __( "Please fill in the participant $j email address" ), 'error' );
}
}
}
//* Sanitize our custom field
function ppp_custom_process_checkout_field_participant_details( $posted ){
$clean = array();
foreach( $posted as $participant ){
$details = ppp_custom_checkout_clean_participant_details( $participant );
if( ! empty( $details ) ){
$clean[] = $details;
}
}
return $clean;
}
add_filter( 'woocommerce_process_checkout_participant_details_field', 'ppp_custom_process_checkout_field_participant_details' );
//*
function ppp_custom_checkout_clean_participant_details( $participant = array() ){
$details = array();
if( isset( $participant["full_name"] ) ){
$details['full_name'] = sanitize_text_field( $participant["full_name"] );
}
if( isset( $participant["email_address"] ) ){
$details['email_address'] = sanitize_text_field( $participant["email_address"] );
}
return $details;
}
//* Update_post_meta
add_action( 'woocommerce_checkout_update_order_meta', 'ppp_custom_checkout_field_update_order_meta', 10, 2 );
function ppp_custom_checkout_field_update_order_meta( $order_id, $posted ){
if( ! empty( $posted["participant_details"] ) ){
update_post_meta( $order_id, "_participant_details", $posted["participant_details"] );
} else {
delete_post_meta( $order_id, "_participant_details" );
}
}
add_action( 'woocommerce_checkout_update_order_meta', 'ppp_custom_checkout_field_update_order_meta', 10, 2 );

Answer 1

You missed an additional loop (the cart items loop) … I have revisited completely your code make it work for multiple item (different items).
So the fields are now dynamically generated by items and by persons on each item:
// Conditional function: Check if at least there is more than one person in cart items
function ppp_check_persons(){
$enabled = array();
foreach( WC()->cart->get_cart() as $cart_item) {
if( isset($cart_item['booking']['_persons'][0])
&& $cart_item['booking']['_persons'][0] > 1 )
{
$enabled = true;
break;
}
}
return $enabled;
}
// Add a new checkout field
add_filter( 'woocommerce_checkout_fields', 'ppp_filter_checkout_fields' );
function ppp_filter_checkout_fields($fields){
$fields['extra_fields'] = array( 'participant' => array(
'type' => 'participant',
'required' => false,
'label' => __( 'Participant Details' )
) );
$cart_items = WC()->cart->get_cart();
$count = 1;
echo '<input type="hidden" name="items_count" value="' . sizeof($cart_items) . '">';
if( ! ppp_check_persons() ) return $fields; // Exit (not enough persons)
// Add "persons" hidden input fields for each cart_item
foreach( WC()->cart->get_cart() as $cart_item ) {
$persons = $cart_item['booking']['_persons'][0];
echo '<input type="hidden" name="persons_'.$count.'" value="' . $persons . '">';
$count++;
}
return $fields;
}
// Add the field to the checkout
add_filter( 'woocommerce_form_field_participant', 'ppp_filter_checkout_field_group', 10, 4 );
function ppp_filter_checkout_field_group( $field, $key, $args, $value ){
if( ! ppp_check_persons() ) return $fields; // Exit (not enough persons)
ob_start();
echo "<h3>Deelnemers</h3>";
$cart_items = WC()->cart->get_cart();
$nb_items = sizeof($cart_items);
$count = 1;
// Loop through cart items;
foreach( $cart_items as $cart_item) {
$persons = $cart_item['booking']['_persons'][0];
if ( $persons > 1 && $persons != 1 ) {
echo '<h4 style="font-size:135%;">Item'.$count.'</h4>';
for ( $i = 1, $j = 2; $i < $persons; $i++, $j++)
{
echo '<span style="margin-bottom:12px;display:inline-block;font-size:112%;">' . __("Deelnemer") . ' ' . $j . '</span>';
echo woocommerce_form_field( "participant[$count][$j][fname]", array(
"type" => "text",
"return" => true,
"value" => "",
"required" => true,
"label" => __( "Naam" )
) );
echo woocommerce_form_field( "participant[$count][$j][email]", array(
"type" => "email",
"return" => true,
"value" => "",
"required" => true,
"label" => __( "Emailadres" )
) );
}
echo '<br>';
}
$count++;
}
return ob_get_clean();
}
// display the extra field on the checkout form
add_action( 'woocommerce_checkout_after_customer_details' ,'ppp_extra_checkout_fields' );
function ppp_extra_checkout_fields(){
$checkout = WC()->checkout();
foreach ( $checkout->checkout_fields['extra_fields'] as $key => $field )
{
woocommerce_form_field( $key, $field, $checkout->get_value( $key ) );
}
}
// Validate custom checkout fields
add_action( 'woocommerce_after_checkout_validation', 'ppp_checkout_field_participant_details_validation', 20, 2 );
function ppp_checkout_field_participant_details_validation( $data, $errors ){
if ( !( isset($_POST['items_count']) && ! empty($_POST['items_count']) ) ) return; // Exit
for ( $h = 1; $h <= esc_attr( $_POST['items_count'] ); $h++ )
{
if ( isset( $_POST['persons_'.$h] ) && $_POST['persons_'.$h] > 1 )
{
for ( $i = 1, $j = 2; $i < esc_attr( $_POST['persons_'.$h] ); $i++, $j++ )
{
if ( isset( $data['participant'][$h][$j]['fname'] ) && empty( $data['participant'][$h][$j]['fname'] ) )
$errors->add( 'participant_'.$h.'_'.$j.'_fname', __( "Please fill in the participant $j full name (Item $h)" ), 'error' );
if ( isset( $data['participant'][$h][$j]['email'] ) && empty( $data['participant'][$h][$j]['email'] ) )
$errors->add( 'participant_'.$h.'_'.$j.'_email', __( "Please fill in the participant $j email address (Item $h)" ), 'error' );
}
}
}
}
// Save custom fields values in the order as meta data
add_action( 'woocommerce_checkout_create_order', 'ppp_custom_fields_checkout_create_order', 20, 2 );
function ppp_custom_fields_checkout_create_order( $order, $data ){
if ( !( isset($_POST['items_count']) && ! empty($_POST['items_count']) ) ) return; // Exit
// Save number of different items in cart
$order->update_meta_data( '_items_count', esc_attr( $_POST['items_count'] ) );
for ( $h = 1; $h <= esc_attr( $_POST['items_count'] ); $h++ )
{
if ( isset( $_POST['persons_'.$h] ) && $_POST['persons_'.$h] > 1 )
{
// Save number of persons for each item in cart
$order->update_meta_data( '_item_'.$h.'_persons', esc_attr( $_POST['persons_'.$h] ) );
for ( $i = 1, $j = 2; $i < esc_attr( $_POST['persons_'.$h] ); $i++, $j++ )
{
// Save number of persons for each item in cart
if ( isset( $data['participant'][$h][$j]['fname'] ) ){
$full_name = sanitize_text_field( $data['participant'][$h][$j]['fname'] );
$order->update_meta_data( '_participant_'.$h.'_'.$j.'_fname', $full_name );
}
if ( isset( $data['participant'][$h][$j]['email'] ) ){
$email_address = sanitize_text_field( $data['participant'][$h][$j]['email'] );
$order->update_meta_data( '_participant_'.$h.'_'.$j.'_email', $email_address );
}
}
}
}
}
Code goes in function.php file of your active child theme (or active theme). Tested and works.
Displaying the data in orders front-end and backend and/or email notifications is just too broad for this answer that handle everything else. To display theis data in admin order edit pages, below customers details, is not a good idea and should be done in a custom metabox instead.