//updating author
public async Task <int> UpdateAuthor(AuthorUpdatingModel updatedAuthor)
{
var author = await _db.Authors.Include(x => x.BooksAuthors)
.SingleOrDefaultAsync(x => x.Id == updatedAuthor.Id);
author.Dob = updatedAuthor.Dob;
author.FullName = updatedAuthor.FullName;
author.BooksAuthors = updatedAuthor.Books?
.Select(x => new BooksAuthor()
{
BookId = x, AuthorId = updatedAuthor.Id
}).ToList();
_db.Authors.Update(author);
return(await _db.SaveChangesAsync());
}
public async Task <IActionResult> Edit(AuthorUpdatingModel editingAuthor)
{
//Validation
if (ModelState.IsValid)
{
var result = await _authorService.UpdateAuthor(editingAuthor);
if (result < 0)
{
Console.WriteLine("Mistake!");
}
return(RedirectToAction("Index"));
}
else
{
return(View(await _authorService.GetAuthor(editingAuthor.Id)));
}
}