public IHttpActionResult Attach(List <int> list, [FromUri] int city_id)
{
if (!_cityService.Exist(city_id))
{
return(BadRequest("ERROR_CITY_NOT_EXISTS"));
}
if (list == null || list.Count == 0)
{
return(BadRequest("ERROR_EMPTY_LIST"));
}
var result = _cityService.Attach(list, city_id);
return(Ok(result));
}