public async Task <IActionResult> CreateBookCollection(
[FromBody] IEnumerable <BookCreationDto> bookCollection) // [FromBody] --> request body - [FromUri] --> query string
{
//todo:Author id is really exist?
var newCollection = _mapper.Map <IEnumerable <Book> >(bookCollection);
_bookRepository.AddMultipleBook(newCollection);
await _bookRepository.SaveChangesAsync();
var allBooks = await _bookRepository.GetMultipleBooksAsync(
newCollection.Select(c => c.Id).ToList());
var allBookIds = string.Join(",", allBooks.Select(c => c.Id));
return(CreatedAtRoute("GetBookCollection", new { bookIds = allBookIds }, allBooks));
}
