public function module_url($uri, $controller_name = '')
{
$CI =& get_instance();
$class = $this->_ci_module_class;
$module_uri = trim($CI->{$class}->_ci_module_uri, '/');
if (!empty($controller_name)) {
$arr = explode('/', $module_uri);
$arr[count($arr) - 1] = str_replace(array('/', '.'), '', $controller_name);
$module_uri = implode('/', $arr);
}
return $this->config->site_url('module/' . $module_uri . '/' . trim($uri, '/'));
}