Group Booking GForms

$data.txt

// For 2 entries

// First Entry
array(18) {
  ["input_15"]=>
  string(5) "24422"
  ["input_3_2"]=>
  string(3) "Mr."
  ["input_3_3"]=>
  string(5) "Byron"
  ["input_3_6"]=>
  string(10) "Fitzgerald"
  ["input_4"]=>
  string(0) ""
  ["input_5"]=>
  string(22) "byron@rootstudio.co.uk"
  ["input_6"]=>
  string(11) "01522528246"
  ["input_7_1"]=>
  string(37) "The Terrace, Grantham Street, Lincoln"
  ["input_7_2"]=>
  string(0) ""
  ["input_7_3"]=>
  string(7) "Lincoln"
  ["input_7_4"]=>
  string(12) "Lincolnshire"
  ["input_7_5"]=>
  string(7) "LN2 1BD"
  ["input_7_6"]=>
  string(14) "United Kingdom"
  ["input_11"]=>
  string(0) ""
  ["input_12"]=>
  string(16) "Byron Fitzgerald"
  ["input_13"]=>
  string(4) "test"
  ["input_14"]=>
  string(11) "01522528246"
  ["input_16"]=>
  string(3) "Yes"
}

// Second Entry
array(18) {
  ["input_15"]=>
  string(5) "24422"
  ["input_3_2"]=>
  string(3) "Mr."
  ["input_3_3"]=>
  string(8) "Winifred"
  ["input_3_6"]=>
  string(7) "Bradley"
  ["input_4"]=>
  string(0) ""
  ["input_5"]=>
  string(22) "byron@rootstudio.co.uk"
  ["input_6"]=>
  string(11) "01522528246"
  ["input_7_1"]=>
  string(37) "The Terrace, Grantham Street, Lincoln"
  ["input_7_2"]=>
  string(0) ""
  ["input_7_3"]=>
  string(7) "Lincoln"
  ["input_7_4"]=>
  string(12) "Lincolnshire"
  ["input_7_5"]=>
  string(7) "LN2 1BD"
  ["input_7_6"]=>
  string(14) "United Kingdom"
  ["input_11"]=>
  string(9) "Something"
  ["input_12"]=>
  string(6) "Second"
  ["input_13"]=>
  string(6) "person"
  ["input_14"]=>
  string(9) "132412421"
  ["input_16"]=>
  NULL
}

$entry.txt

// Entry data when accesing ater post creation note ID's are different here

// First Entry 
array(40) {
  ["id"]=>
  string(5) "20752"
  ["status"]=>
  string(6) "active"
  ["form_id"]=>
  string(3) "100"
  ["ip"]=>
  string(3) "::1"
  ["source_url"]=>
  string(109) "https://stbarnabashospice.local/wp-admin/admin-post.php?redirect=https://stbarnabashospice.local/colour-dash/"
  ["currency"]=>
  string(3) "GBP"
  ["post_id"]=>
  NULL
  ["date_created"]=>
  string(19) "2022-02-02 10:03:54"
  ["date_updated"]=>
  string(19) "2022-02-02 10:03:54"
  ["is_starred"]=>
  int(0)
  ["is_read"]=>
  int(0)
  ["user_agent"]=>
  string(120) "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Safari/537.36"
  ["payment_status"]=>
  NULL
  ["payment_date"]=>
  NULL
  ["payment_amount"]=>
  NULL
  ["payment_method"]=>
  string(0) ""
  ["transaction_id"]=>
  NULL
  ["is_fulfilled"]=>
  NULL
  ["created_by"]=>
  string(4) "1392"
  ["transaction_type"]=>
  NULL
  [15]=>
  string(5) "24422"
  ["3.2"]=>
  string(3) "Mr."
  ["3.3"]=>
  string(5) "Byron"
  ["3.4"]=>
  string(0) ""
  ["3.6"]=>
  string(10) "Fitzgerald"
  ["3.8"]=>
  string(0) ""
  [4]=>
  string(0) ""
  [5]=>
  string(22) "byron@rootstudio.co.uk"
  [6]=>
  string(11) "01522528246"
  ["7.1"]=>
  string(37) "The Terrace, Grantham Street, Lincoln"
  ["7.2"]=>
  string(0) ""
  ["7.3"]=>
  string(7) "Lincoln"
  ["7.4"]=>
  string(12) "Lincolnshire"
  ["7.5"]=>
  string(7) "LN2 1BD"
  ["7.6"]=>
  string(14) "United Kingdom"
  [16]=>
  string(3) "Yes"
  [11]=>
  string(0) ""
  [12]=>
  string(16) "Byron Fitzgerald"
  [13]=>
  string(4) "test"
  [14]=>
  string(11) "01522528246"
}

// Second Entry
array(40) {
  ["id"]=>
  string(5) "20753"
  ["status"]=>
  string(6) "active"
  ["form_id"]=>
  string(3) "100"
  ["ip"]=>
  string(3) "::1"
  ["source_url"]=>
  string(109) "https://stbarnabashospice.local/wp-admin/admin-post.php?redirect=https://stbarnabashospice.local/colour-dash/"
  ["currency"]=>
  string(3) "GBP"
  ["post_id"]=>
  NULL
  ["date_created"]=>
  string(19) "2022-02-02 10:03:57"
  ["date_updated"]=>
  string(19) "2022-02-02 10:03:57"
  ["is_starred"]=>
  int(0)
  ["is_read"]=>
  int(0)
  ["user_agent"]=>
  string(120) "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/97.0.4692.99 Safari/537.36"
  ["payment_status"]=>
  NULL
  ["payment_date"]=>
  NULL
  ["payment_amount"]=>
  NULL
  ["payment_method"]=>
  string(0) ""
  ["transaction_id"]=>
  NULL
  ["is_fulfilled"]=>
  NULL
  ["created_by"]=>
  string(4) "1392"
  ["transaction_type"]=>
  NULL
  [15]=>
  string(5) "24422"
  ["3.2"]=>
  string(3) "Mr."
  ["3.3"]=>
  string(8) "Winifred"
  ["3.4"]=>
  string(0) ""
  ["3.6"]=>
  string(7) "Bradley"
  ["3.8"]=>
  string(0) ""
  [4]=>
  string(0) ""
  [5]=>
  string(22) "byron@rootstudio.co.uk"
  [6]=>
  string(11) "01522528246"
  ["7.1"]=>
  string(37) "The Terrace, Grantham Street, Lincoln"
  ["7.2"]=>
  string(0) ""
  ["7.3"]=>
  string(7) "Lincoln"
  ["7.4"]=>
  string(12) "Lincolnshire"
  ["7.5"]=>
  string(7) "LN2 1BD"
  ["7.6"]=>
  string(14) "United Kingdom"
  [16]=>
  string(0) ""
  [12]=>
  string(6) "Second"
  [13]=>
  string(6) "person"
  [14]=>
  string(9) "132412421"
  [11]=>
  string(0) ""
}

$result.txt

// Results for both entries, not the entry_id is the same

// First Result
array(6) {
  ["is_valid"]=>
  bool(true)
  ["page_number"]=>
  int(0)
  ["source_page_number"]=>
  int(1)
  ["confirmation_message"]=>
  string(260) "
Thanks for contacting us! We will get in touch with you shortly.
"
  ["confirmation_type"]=>
  string(7) "message"
  ["entry_id"]=>
  string(5) "20752"
}

// Second Result
array(6) {
  ["is_valid"]=>
  bool(true)
  ["page_number"]=>
  int(0)
  ["source_page_number"]=>
  int(1)
  ["confirmation_message"]=>
  string(260) "
Thanks for contacting us! We will get in touch with you shortly.
"
  ["confirmation_type"]=>
  string(7) "message"
  ["entry_id"]=>
  string(5) "20752"
}

group-booking.php

<?php 
add_action('admin_post_nopriv_studio_race_group_form_submit', 'studio_race_group_form_submit');
add_action('admin_post_studio_race_group_form_submit', 'studio_race_group_form_submit');

// Save group booking entries
function studio_race_group_form_submit()
{
    
    $entrant_form_id = $_POST['nested_id'];
    $fields = array_filter($_POST, function ($key) {
        return substr($key, 0, strlen('input')) === 'input';
    }, ARRAY_FILTER_USE_KEY);

    $entrantData = array_filter($_POST, function ($key) use ($entrant_form_id) {
        return substr($key, 0, strlen('form')) === "form";
    }, ARRAY_FILTER_USE_KEY);

    $entrantData = $entrantData["form_$entrant_form_id"];
    $entrants = [];
    $first = array_key_first($entrantData);
    $length = count($entrantData[$first]);
    
    for ($i = 0; $i < $length; $i++) {
        foreach ($entrantData as $key => $value) {
            unset($_POST["form_$entrant_form_id"][$i][$key]);
            $entrants[$i][$key] = $value[$i];
        }
    }

    $data = [];

    $form_id = $_POST['form_id'];

    $form = GFAPI::get_form($_POST['form_id']);
    $entrant_form = GFAPI::get_form($entrant_form_id);

    foreach ($fields as $key => $value) {
        $id = str_replace("{$form_id}_", '', $key);
        unset($_POST[$key]);
        $data[$id] = $value;
    }

    $entrant_data = [];
    foreach ($entrants as $index => $entrant) {
        $entrant_data[$index] = [];
        foreach ($entrant as $key => $value) {
            $id =  str_replace('.', '_', str_replace('{$form_id}_', '', str_replace("form_{$entrant_form_id}_", '', $key)));
            $entrant_data[$index][$id] = $value;
        }
    }
    foreach ($entrant_data as $data) {
        var_dump($data); // See $data.txt
        $result = GFAPI::submit_form($entrant_form_id, $data);
        foreach ($data as $key => $value) {
            unset($_POST[$key]);
        }
        var_dump($result); // See $result.txt
    }
}

// Update race number for entry
add_action('gform_advancedpostcreation_post_after_creation', 'save_post_callback', 10, 4);
function save_post_callback($post_id, $feed, $entry, $form)
{
    if ($feed['meta']['postType'] != 'entrant') {
        return;
    }

    if (get_field('race_number', $post_id)) {
        return;
    }

    var_dump($entry); // See $entry.txt

    $event_id = get_field('race', $post_id);

    $query = new WP_Query([
        'post_type'      => 'entrant',
        'meta_key'       => 'race',
        'meta_value'     => $event_id,
        'posts_per_page' => 1,
        'post__not_in'   => [$post_id],
        'orderby'        => 'race_number',
        'order'          => 'DESC',
    ]);

    $posts = $query->get_posts();
    $race_number_offset = get_field('race_number_offset', $event_id);

    if (!isset($posts[0])) {
        update_field('race_number', $race_number_offset, $post_id);
        return;
    }

    $post = $posts[0];

    $current_race_number = get_field('race_number', $post->ID);

    if ($current_race_number < $race_number_offset) {
        update_field('race_number', $race_number_offset, $post_id);
    } else {
        update_field('race_number', $current_race_number + 1, $post_id);
    }

}