Using kirby builder to add new radio-button options from the panel?

The CMS Questions
19

I am sending all the filled-in input forms to kirby and save each of them to a new text-file in a subpage.

I want to replace all the items in the $data array, by looping over the $section object from Kirby Structure, which is what I used to create the input forms (Numbering Kirby Modules and Kirby Builder structure field).

So iterating over the IDs and names I built from the numeration of each element in the structure field, and put them in the array, if my understanding of how the input form works is correct (first time trying this).

<?php

return function($site, $pages, $page) {

  $alert = null;

  if(r::is('post') && get('register')) {
    if(!empty(get('website'))) {
      // lets tell the bot that everything is ok
      go($page->url());
      exit;
    }
    $data = array(
      'firstname' => esc(get('firstname')),
      'lastname'  => esc(get('lastname')),
      'company'   => esc(get('company')),
      'email'     => esc(get('email')),
      'message'   => esc(get('message'))
    );

    $rules = array(
      'firstname' => array('required'),
      'lastname'  => array('required'),
      'email'     => array('required', 'email'),
    );
    $messages = array(
      'firstname' => 'Please enter a valid first name',
      'lastname'  => 'Please enter a valid last name',
      'email'     => 'Please enter a valid email address',
    );

    // some of the data is invalid
    if($invalid = invalid($data, $rules, $messages)) {
      $alert = $invalid;
    } else {

      // everything is ok, let's try to create a new registration
      try {

        $newRegistration = $page->find('registrations')->children()->create(str::slug($data['lastname'] . '-' . $data['firstname'] . '-' . time()) , 'register', $data);

        $success = 'Your registration was successful';
        $data = array();

      } catch(Exception $e) {
        echo 'Your registration failed: ' . $e->getMessage();
      }
    }
  }

  return compact('alert', 'data', 'success');
};