public int Create(Lesson lesson)
{
this.lessons.Add(lesson);
this.lessons.Save();
return lesson.Id;
}
public void Update(int id, Lesson lesson)
{
var entityToUpdate = this.lessons.GetById(id);
entityToUpdate.Title = lesson.Title;
entityToUpdate.Description = lesson.Description;
entityToUpdate.YoutubeVideoId = lesson.YoutubeVideoId;
this.lessons.Save();
}