public function __construct() { parent::__construct(); get_instance()->config->load('site_config', TRUE); // $api = get_instance()->config->item('google_app', 'site_config'); // $this->api_key = $api['simple_api_key']; $this->api_key = Api_key::value('google', 'developer_key'); if (empty($this->api_key)) { throw new Exception('Setup google api key.'); } }