public async Task <IHttpActionResult> PutBook(int id, Book book)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != book.Id)
{
return(BadRequest());
}
db.Entry(book).State = EntityState.Modified;
try
{
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BookExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public void UpdateAuthor(Author author)
{
Author a = context.Authors.Find(author.Id);
if (a is not null)
{
a.Name = author.Name;
context.Entry(a).State = EntityState.Modified;
context.SaveChanges();
}
}
public IHttpActionResult PutAuthor(int id, Author author)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
if (id != author.Id)
{
return(BadRequest());
}
db.Entry(author).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!AuthorExists(id))
{
return(NotFound());
}
else
{
throw;
}
}
return(StatusCode(HttpStatusCode.NoContent));
}
public ActionResult Edit([Bind(Include = "GenreId,GenreName")] Genre genre)
{
if (ModelState.IsValid)
{
//check if the same genre exists
var genreExists = db.Genres.Count(g => g.GenreName == genre.GenreName);
if (genreExists == 0)
{
db.Entry(genre).State = EntityState.Modified;
db.SaveChanges();
}
return(RedirectToAction("Index"));
}
return(View(genre));
}
