def searchuser(self, searchstring=None):
        """ search user page """
        self._check_auth(must_admin=False)
        is_admin = self._check_admin()
        if searchstring is not None and len(searchstring) > 2:
            res = self._search(searchstring)
        else:
            res = None
        attrs_list = self.attributes.get_search_attributes()
        return self.temp['searchuser.tmpl'].render(
            searchresult=res,
            attrs_list=attrs_list,
            is_admin=is_admin,
            custom_js=self.custom_js,
            notifications=self._empty_notification(),
            )