Restrict COD payment if cart has Gift Certificate - php

Question

How can we check by code in Opencart 2.0.3 that Cart contains Gift Certificate?
I want to disable cash on delivery (cod) payment mode if cart has Gift Certificate (opencart 2.0.3). Any code or idea to achieve this?

Answer 1

Yes you can do that , In products you can set a status that you product is Gift Certificate or not , after that some case will arrive while order:
Customer can order products with Gift Certificate so you have to check if any product is with Gift Certificate status that shipped will not be COD

Answer 2

You can edit the cod.php model (catalog/model/payment/cod.php) and add condition if gift certificates exist.
Do you mean "voucher" with "gift certificate"
This is the actual model
<?php
class ModelPaymentCOD extends Model {
public function getMethod($address, $total) {
$this->load->language('payment/cod');
$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone_to_geo_zone WHERE geo_zone_id = '" . (int)$this->config->get('cod_geo_zone_id') . "' AND country_id = '" . (int)$address['country_id'] . "' AND (zone_id = '" . (int)$address['zone_id'] . "' OR zone_id = '0')");
if ($this->config->get('cod_total') > 0 && $this->config->get('cod_total') > $total) {
$status = false;
} elseif (!$this->config->get('cod_geo_zone_id')) {
$status = true;
} elseif ($query->num_rows) {
$status = true;
} else {
$status = false;
}
$method_data = array();
if ($status) {
$method_data = array(
'code' => 'cod',
'title' => $this->language->get('text_title'),
'terms' => '',
'sort_order' => $this->config->get('cod_sort_order')
);
}
return $method_data;
}
}
You can add this condition:
if(isset($this->session->data['vouchers'])){
$status = false;
}
It works for me.
If you don't have experience with php replace the code from file with this :
<?php
class ModelPaymentCOD extends Model {
public function getMethod($address, $total) {
$this->load->language('payment/cod');
$query = $this->db->query("SELECT * FROM " . DB_PREFIX . "zone_to_geo_zone WHERE geo_zone_id = '" . (int)$this->config->get('cod_geo_zone_id') . "' AND country_id = '" . (int)$address['country_id'] . "' AND (zone_id = '" . (int)$address['zone_id'] . "' OR zone_id = '0')");
if ($this->config->get('cod_total') > 0 && $this->config->get('cod_total') > $total) {
$status = false;
} elseif (!$this->config->get('cod_geo_zone_id')) {
$status = true;
} elseif ($query->num_rows) {
$status = true;
} else {
$status = false;
}
if(isset($this->session->data['vouchers'])){
$status = false;
}
$method_data = array();
if ($status) {
$method_data = array(
'code' => 'cod',
'title' => $this->language->get('text_title'),
'terms' => '',
'sort_order' => $this->config->get('cod_sort_order')
);
}
return $method_data;
}
}