public ActionResult <IEnumerable <AuthorDto> > Get([FromRoute] string keys)
{
if (string.IsNullOrWhiteSpace(keys))
{
return(BadRequest());
}
var authorIds = keys.Split(',');
var authors = _repository.GetAuthorsByIds(authorIds);
if (authors.Count() != authorIds.Length)
{
return(NotFound());
}
return(Ok(_mapper.Map <IEnumerable <AuthorDto> >(authors)));
}