remove required field from opencart 2 admin when inserting new orders - opencart

Question

im trying to insert orders manually through the admin in Opencart 2, so most of these orders will nt have a email address so i need to make the email filed not required at the insert order through admin
but its a bit complex in Opencart 2
i see the below code in add function
if ($this->validate()) {
// API
$this->load->model('user/api');
$api_info = `$this->model_user_api->getApi($this->config->get('config_api_id'));`
if ($api_info) {
$curl = curl_init();
// Set SSL if required
if (substr(HTTPS_CATALOG, 0, 5) == 'https') {
curl_setopt($curl, CURLOPT_PORT, 443);
}
curl_setopt($curl, CURLOPT_HEADER, false);
curl_setopt($curl, CURLINFO_HEADER_OUT, true);
curl_setopt($curl, CURLOPT_USERAGENT, $this->request->server['HTTP_USER_AGENT']);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_FORBID_REUSE, false);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_URL, HTTPS_CATALOG . 'index.php?route=api/login');
curl_setopt($curl, CURLOPT_POST, true);
curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($api_info));
$json = curl_exec($curl);
if (!$json) {
$this->error['warning'] = sprintf($this->language->get('error_curl'), curl_error($curl), curl_errno($curl));
} else {
$response = json_decode($json, true);
var_dump($response);
if (isset($response['cookie'])) {
$this->session->data['cookie'] = $response['cookie'];
}
curl_close($curl);
}
}
at the sale/order controller i dont find any specific form validation when inserting a order other than the above code.
can some one please tell me where can i find the form validation part in opencart 2?

Answer 1

OpenCart 2.0 uses a catalog side API which is what the code above is referring to (it calls it via cURL). You can find this in /catalog/controller/api/ in the relative .php file, which in your case is order.php. This includes the validation as well as the code to call the model files