vit

{set $rows = json_decode($_modx->resource.constructor_block, true)}
                        {foreach $rows as $index => $row}
                                <strong>{$row.name}</strong> {$row.description}
                                {set $lessons = json_decode($row.lesson, true)}
                                            {foreach $lessons as $lesson}
                                                    <h4>{$lesson.title}</h4>
                                            {/foreach}
                        {/foreach}

<script>
     document.addEventListener('fetchit:after', (e) => {
  const { response } = e.detail;

  console.log(response.success); // true|false
  console.log(response.message); // Сообщение от сервера
  console.log(response.data); // Данные от сервера
})

 </script>

// указываем название TV
$dropdownValues = $modx->resource->getTVValue('dropdown_tv');

$valuesArray = explode(',', $dropdownValues);

// оберачиаем значения в теги "option"
foreach ($valuesArray as $value) {
    echo '<option>' . trim($value) . '</option>';
}

$client = new GuzzleHttp\Client();
$res = $client->request('GET', 'https://api.site', [
    'headers' => [
        'Content-Type' => 'application/json',
        'Authorization' => 'OAuth НАШ TOKEN'
    ]
]);
$res->getStatusCode();

$html = $res->getBody();

echo $html;

[[msOptions?options=`color`]]