void Apply(AddedNewRatingEvent @event)
{
var rating = new LessonRating()
{
Id = @event.RatingId,
UserId = @event.UserId,
Content = @event.Content,
CreationDate = @event.Date,
LastModifDate = @event.Date,
RecordState = Constants.RECORD_STATE_ACTIVE
};
Ratings.Add(rating);
}
public void Handle(AddedNewRatingEvent @event)
{
using (var db = new DisciturContext())
{
// get read-model Ids (ID-maps)
int lessonId = _identityMapper.GetModelId <Lesson>(@event.Id);
int userId = _identityMapper.GetModelId <User>(@event.UserId);
// get involved read-model entities
User author = db.Users.Find(userId);
Lesson lesson = db.Lessons.Find(lessonId);
// Create new Read-Model Lesson's Comment
LessonRating rating = new LessonRating();
rating.LessonId = lessonId;
rating.UserId = userId;
rating.Author = author;
rating.Rating = @event.Rating;
rating.Content = @event.Content ?? string.Empty;
rating.CreationDate = @event.Date;
rating.LastModifDate = @event.Date;
rating.LastModifUser = author.UserName;
rating.Vers = 1;
rating.RecordState = Constants.RECORD_STATE_ACTIVE;
// Add new Lesson's Rating
db.LessonRatings.Add(rating);
//// Update Lesson Rating with Average of Ratings on the same Lesson
//IQueryable<int> prevRatings = db.LessonRatings
// .Where(r => r.LessonId.Equals(rating.LessonId) &&
// r.RecordState.Equals(Constants.RECORD_STATE_ACTIVE))
// .Select(r => r.Rating);
//List<int> ratingsList = prevRatings.ToList();
//ratingsList.Add(rating.Rating);
//lesson.Rate = Math.Max((int)Math.Round(ratingsList.Average()), 1);
lesson.Rate = CalculateAverageRating(rating);
// Update Lesson's version
// TODO: is it correct to update readModel "devops fields" of lesson in this case?
UpdateLessonArchFields(lesson, author.UserName, @event.Date, @event.Version);
// Persist changes
db.Entry(lesson).State = EntityState.Modified;
db.SaveChanges();
// Map new IDs
// NOTE: Comment is NOT and AR, but it's mapped with it's own Id-map for compatibility with existant read-model
_identityMapper.Map <LessonRating>(rating.Id, @event.RatingId);
}
}
void Apply(AddedNewRatingEvent @event)
{
var rating = new LessonRating()
{
Id = @event.RatingId,
UserId = @event.UserId,
Content = @event.Content,
CreationDate = @event.Date,
LastModifDate = @event.Date,
RecordState = Constants.RECORD_STATE_ACTIVE
};
Ratings.Add(rating);
}
