// PUT api/Albums/5
public HttpResponseMessage PutAlbum(int id, Album album)
{
if (!ModelState.IsValid)
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
var albumToUpdate = db.Albums.FirstOrDefault(a => a.AlbumId == id);
if (albumToUpdate != null && album != null)
{
albumToUpdate.UpdateWith(album);
}
else
{
return Request.CreateResponse(HttpStatusCode.BadRequest);
}
db.Entry(albumToUpdate).State = EntityState.Modified;
try
{
db.SaveChanges();
}
catch (DbUpdateConcurrencyException ex)
{
return Request.CreateErrorResponse(HttpStatusCode.NotFound, ex);
}
return Request.CreateResponse(HttpStatusCode.OK);
}
public void UpdateWith(Album album)
{
if (!string.IsNullOrWhiteSpace(album.AlbumTitle))
{
this.AlbumTitle = album.AlbumTitle;
}
if (album.AlbumYear.HasValue)
{
this.AlbumYear = album.AlbumYear;
}
if (!string.IsNullOrWhiteSpace(album.Producer))
{
this.Producer = album.Producer;
}
}
// POST api/Albums
public HttpResponseMessage PostAlbum(string artistName, [FromBody]AlbumDto album)
{
if (string.IsNullOrWhiteSpace(artistName))
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
var artist = db.Artists.Include(a => a.Albums).SingleOrDefault(a => a.ArtistName == artistName);
if (artist == null)
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
if (artist.Albums.Any(a => a.AlbumTitle == album.AlbumTitle))
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
if (ModelState.IsValid)
{
var newAlbum = new Album
{
AlbumTitle = album.AlbumTitle,
AlbumYear = album.AlbumYear,
Producer = album.Producer
};
db.Albums.Add(newAlbum);
artist.Albums.Add(newAlbum);
db.SaveChanges();
HttpResponseMessage response = Request.CreateResponse(HttpStatusCode.Created, newAlbum);
response.Headers.Location = new Uri(Url.Link("DefaultApi", new { id = newAlbum.AlbumId }));
return response;
}
else
{
return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ModelState);
}
}
