/** * * @return NewsletterStore */ static function instance() { if (self::$instance == null) { self::$instance = new NewsletterStore(); } return self::$instance; }
function get_user_by_wp_user_id($wp_user_id, $format = OBJECT) { return $this->store->get_single_by_field(NEWSLETTER_USERS_TABLE, 'wp_user_id', $wp_user_id, $format); }