public function postEdit()
 {
     $post = json_decode(file_get_contents("php://input"));
     $business_id = Business::getBusinessIdByTerminalId($post->terminal_id);
     if (Helper::isBusinessOwner($business_id, Helper::userId())) {
         // PAG added permission checking
         if ($this->validateTerminalName($business_id, $post->name, $post->terminal_id)) {
             Terminal::setName($post->terminal_id, $post->name);
             return json_encode(array('status' => 1));
         } else {
             return json_encode(array('status' => 0));
         }
     } else {
         return json_encode(array('message' => 'You are not allowed to access this function.'));
     }
 }