// Methods:
public double GetAvgReviewRating()
{
if (Reviews.Count == 0)
{
return(0);
}
return(Reviews.Average(review => review.Rating));
}
public double GetAvgRating()
{
if (Reviews == null || Reviews.Count == 0)
{
return(0.0f);
}
return(Math.Round(Reviews.Average(x => x.GetRating()), 2));
}
public void OnGet(int id)
{
Album = _albumService.GetAlbumByID(id);
Reviews = _reviewService.GetReviews().Where(r => r.Album.AlbumID == id);
//List<Review> test = new List<Review>();
//test = Reviews.Where(r => r.ReviewID == id);
if (Reviews.Count() != 0)
{
Rating = Reviews.Average(r => r.StarRating);
}
}
public double?GetAverageGrade()
{
if (Reviews.Any())
{
return(Math.Round(Reviews.Average(g => g.Grade), 1));
}
else
{
return(null);
}
}
public string AverageRating()
{
if (Reviews.Count() > 0)
{
var rating = Reviews.Average(r => r.Rating).ToString();
return(rating);
}
else
{
return("Not rated");
}
}
public void SetRating()
{
if (Reviews.Count == 0)
{
_rating = null;
}
else
{
_rating = Reviews.Average(r => r.Rating);
_rating = Math.Round((double)_rating, 1);
}
}
public virtual void CountRating()
{
Rating = (int)(Reviews.Count == 0 ? 0 : Reviews.Average(x => x.Rating));
}
/// <summary>
/// Calculates the average rating of this product <see cref="Reviews"/> property.
/// </summary>
/// <returns>Average rating of this product.</returns>
public double GetAverageRating()
{
return(Reviews is null || Reviews.Count == 0 ?
-1 : Reviews.Average(r => r.Rating));
}