OpenCart product_form html-select не передает значение в базу данных

Я не могу понять, что я делаю неправильно

<pre>
<?php
print_r($_POST); echo $parcel_type;
?>
</pre>

Печать дает: массив ()
$ parcel_type дает: 0

При сохранении он не пройдет выбранное значение. Другие поля выбора opencart кажутся идентично закодированными, но передают значение.

Есть идеи, где я иду не так?

админ / вид / шаблон / Каталог / product_form.tpl

<PRE>
<?php

$parcel_option = array(
'0' => 'pakket' ,
'1' => 'brievenbuspakket',
'2' => 'brievenbuspakje <20gr',
'3' => 'brievenbuspakje <50gr',
'4' => 'brievenbuspakje <100gr',
'5' => 'brievenbuspakje <250gr',
'6' => 'brievenbuspakje <2 KG',
);

?>

<div class="form-group">

<label class="col-sm-2 control-label" for="input-parcel_type"><span data-toggle="tooltip" title="Kies verzendvorm"</span>

<?php
print_r($_POST);
echo $parcel_type; ?>
</label>

<div class="col-sm-10">

<select name="parcel_type" id="input-parcel-type" class="form-control">

<?php
if (isset($data['parcel_type'])) {
?>
<option value="" >Kies verzendvorm</option>

<?php

$parcel_type = 0;

$parcel_text = 0;

asort($parcel_option);

reset($parcel_option);

foreach($parcel_option as $parcel_type => $parcel_text):
echo '<option value="'.$parcel_type.'">'.$parcel_text.'</option>';

endforeach;
?>

</PRE>

администратор / контроллер / каталог / product.php

<pre>           if (isset($this->request->post['parcel_type'])) {
$data['parcel_type'] = $this->request->post['parcel_type'];
} elseif (!empty($product_info)) {
$data['parcel_type'] = $product_info['parcel_type'];
} else {
$data['parcel_type'] = '0' ;
}
</pre>

Функция редактирования файлов модели

<PRE>
$this->db->query("UPDATE " . DB_PREFIX . "product SET model = '" . $this->db->escape($data['model']) . "', sku = '" . $this->db->escape($data['sku']) . "', upc = '" . $this->db->escape($data['upc']) . "', ean = '" . $this->db->escape($data['ean']) . "', jan = '" . $this->db->escape($data['jan']) . "', isbn = '" . $this->db->escape($data['isbn']) . "',bol_ship_time = '" . $this->db->escape($data['bol_ship_time']) . "', mpn = '" . $this->db->escape($data['mpn']) . "', location = '" . $this->db->escape($data['location']) . "', quantity = '" . (int)$data['quantity'] . "', minimum = '" . (int)$data['minimum'] . "', subtract = '" . (int)$data['subtract'] . "', stock_status_id = '" . (int)$data['stock_status_id'] . "', date_available = '" . $this->db->escape($data['date_available']) . "', manufacturer_id = '" . (int)$data['manufacturer_id'] . "', shipping = '" . (int)$data['shipping'] . "', product_condition = '" . (int)$data['product_condition'] . "',external_shipment = '" . (int)$data['external_shipment'] . "', parcel_type = '" . (int)$data['parcel_type'] . "',  bol_visable = '" . (int)$data['bol_visable'] . "', nextail_visable = '" . (int)$data['nextail_visable'] . "', dutch_visable = '" . (int)$data['dutch_visable'] . "', belgium_visable = '" . (int)$data['belgium_visable'] . "', price = '" . (float)$data['price'] . "', cost = '" . (float)$data['cost'] . "', cost_amount = '" . (float)$data['cost_amount'] . "', cost_percentage = '" . (float)$data['cost_percentage'] . "', cost_additional = '" . (float)$data['cost_additional'] . "', costing_method = '" . (int)$data['costing_method'] . "', supplier_id = '" . (int)$data['supplier_id'] . "', wholesale_cost = '" . (float)$data['wholesale_cost'] . "', shipping_cost = '" . (float)$data['shipping_cost'] . "', added_shipping_cost = '" . (float)$data['added_shipping_cost'] . "', packaging_cost = '" . (float)$data['packaging_cost'] . "', handling_cost = '" . (float)$data['handling_cost'] . "',storage_cost = '" . (float)$data['storage_cost'] . "', printing_cost = '" . (float)$data['printing_cost'] . "',margin = '" . (float)$data['margin'] . "',bol_fee_cost = '" . (float)$data['bol_fee_cost'] . "', bol_cost = '" . (float)$data['bol_cost'] . "', nextail_fee_cost = '" . (float)$data['nextail_fee_cost'] . "', nextail_cost = '" . (float)$data['nextail_cost'] . "',other_cost = '" . (float)$data['other_cost'] . "',bol_price = '" . (float)$data['bol_price'] . "', nextail_price = '" . (float)$data['nextail_price'] . "', min_profit = '" . (float)$data['min_profit'] . "', points = '" . (int)$data['points'] . "', weight = '" . (float)$data['weight'] . "', weight_class_id = '" . (int)$data['weight_class_id'] . "', length = '" . (float)$data['length'] . "', width = '" . (float)$data['width'] . "', height = '" . (float)$data['height'] . "', length_class_id = '" . (int)$data['length_class_id'] . "', status = '" . (int)$data['status'] . "', tax_class_id = '" . (int)$data['tax_class_id'] . "', sort_order = '" . (int)$data['sort_order'] . "', date_modified = NOW() WHERE product_id = '" . (int)$product_id . "'");
</PRE>