public async Task <IActionResult> AddBook([FromBody] SimpleBook vm)
{
if (ModelState.IsValid)
{
var book = new Book()
{
Id = vm.Id,
Title = vm.Title,
Price = vm.Price,
Description = vm.Description,
CoverPage = vm.CoverPage,
Tags = vm.Tags,
Author = authorManager.GetAuthorById(vm.Author)
};
bookManager.AddBook(book);
vm.Id = book.Id;
await bookHub.Clients.All.SendAsync("BookAdded", vm);
return(Created($"/api/books/{book.Id}", vm));
}
else
{
return(BadRequest(ModelState));
}
}
[NullIsError404(Reason = "Author Not Found")] //action level attribute overrides controller level attribute
//[RequiredParameter("id")] <--- if id is null or not given send Error 400
public ActionResult Details(string id)
{
//business logic shouldn't be part of the controller
//var author = dummyAuthors.FirstOrDefault(a => a.Id == id);
var author = authorManager.GetAuthorById(id);
//what if author is null?
if (author == null)
{
//return E404
}
return(View(author));
}
[Route("old/{id}")] //this path fragment is in combination with controller level Route[]
public IActionResult GetAuthorByIdOldVersion(string id)
{
var author = authorManager.GetAuthorById(id);
if (author != null)
{
return(Ok(author)); //Happy Path
}
else
{
//return NoFound(); //return status 404 without anydata
//return NotFound($"No Author with {id} found"); //return with simple message --> text/plain
return(NotFound(new { Error = "No Author With Given Id", Id = id })); //return with structure message --> application/json
}
}
public GetAuthorOutput GetAuthorById(GetAuthorInput input)
{
var getAuthor = _authorManager.GetAuthorById(input.Id);
var output = ObjectMapper.Map <GetAuthorOutput>(getAuthor);
return(output);
}
public GetAuthorOutput GetAuthorById(GetAuthorInput input)
{
var author = _authorManager.GetAuthorById(input.Id);
var result = ObjectMapper.Map <GetAuthorOutput>(author);
return(result);
}
public IActionResult Get(int id)
{
try
{
return(Ok(_authorManager.GetAuthorById(id)));
}
catch (ArgumentException ex)
{
return(BadRequest(ex));
}
}
public async Task <ActionResult> UpdateAuthor(int id)
{
try {
var entity = await _manager.GetAuthorById(id);
return(View(entity));
} catch (ArgumentNullException) {
return(RedirectToAction("ErrorPage", nameof(Main), new { message = "Error: can not find author with this id", call = nameof(Author) }));
}
catch (DbUpdateException) {
return(RedirectToAction("ErrorPage", nameof(Main), new { message = "Error: invalid input", call = nameof(Author) }));
}
}