Any idea how to send a Custom Field from One Page checkout to an order email?

Question

Prestashop

Installed Prestashop 1.7 and a module for quick checkout. Any idea how to send a Custom Field from One Page checkout to an order email? Added there radio buttons for selecting the delivery time interval, this is an additional item in the order letter. the field does not go away. Thank you!

Answer 1

If we are talking about Onepagecheckout PS - here is the solution .

Answer 2

The code does not come out to adapt. Help me please.

public function GetCustomFields($order, $id_lang)
  {
     $order = new Order($order->id);
     $query = new DbQuery();
     $query->SELECT field_value FROM ps_zooprvelsof_supercheckout_fields_data ORDER BY ps_zooprvelsof_supercheckout_fields_data DESC;
     $field_options = Db::getInstance()->executeS($query);
     if (!count($field_options)) {
        return;
     }
     foreach ($field_options as $field)
     return $field['field_value'] '<br/';
  }

What is wrong in the code? I need to pick up the "field_value" value from the database, sorting by "ps_zooprvelsof_supercheckout_fields_data"