public double SetRaiting(int idPhoto, string login, int rating)
{
User user = unitOfWork.Users.GetByLogin(login);
Photo photo = unitOfWork.Photos.GetById(idPhoto);
Rating r = new Rating { User = user, Value = rating, Photo = photo };
unitOfWork.Rating.UpdateOrAdd(r, photo);
unitOfWork.Save();
return unitOfWork.Rating.GetRating(photo);
}
public void UpdateOrAdd(Rating rating, Photo photo)
{
Rating r = photo.Raitings.FirstOrDefault(rt=>rt.User == rating.User);
if (r != null)
{
r.Value = rating.Value;
db.Entry(r).State = EntityState.Modified;
}
else
photo.Raitings.Add(rating);
}