} // Get by ID
/// <summary>
/// Adds an Artist Rating
/// </summary>
/// <param name="artistRating"></param>
/// <returns></returns>
public IHttpActionResult Post(ArtistRatingCreate artistRating)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
var service = CreateArtistRatingService();
if (!service.CreateArtistRating(artistRating))
{
return(InternalServerError());
}
return(Ok());
} // Post
public bool CreateArtistRating(ArtistRatingCreate model)
{
// format the new ArtistRating record
var entity =
new ArtistRating()
{
OwnerId = _userId,
ArtistId = model.ArtistId,
ArtistIndividualRating = model.ArtistIndividualRating,
Artist = model.Artist
};
// Add the new ArtistRating to the table
using (var ctx = new ApplicationDbContext())
{
ctx.ArtistRatings.Add(entity);
bool addedArtistRating = ctx.SaveChanges() == 1;
if (!addedArtistRating)
{
return(false);
}
}
// Update the Artist record
using (var ctx = new ApplicationDbContext())
{
// retrieve the ArtistRating record we just posted so we can follow the foreign key to the Artist record
var newArtistRating =
ctx
.ArtistRatings
.Single(e => e.ArtistRatingId == entity.ArtistRatingId && e.OwnerId == _userId);
// Update the fields in the Artist record at the other end of the foreign key
newArtistRating.Artist.CulumativeRating += model.ArtistIndividualRating;
newArtistRating.Artist.NumberOfRatings += 1;
newArtistRating.Artist.ArtistRating = newArtistRating.Artist.CulumativeRating / newArtistRating.Artist.NumberOfRatings;
return(ctx.SaveChanges() == 1);
}
} // CreateArtistRating
