private void UpdateInfo(Topic topic, DalTopic dalTopic)
{
if (topic == null || dalTopic == null) throw new ArgumentNullException();
topic.Id = dalTopic.Id;
topic.Category_Id = dalTopic.CategoryId;
topic.MembershipUser_Id = dalTopic.User.Id;
topic.Name = dalTopic.Name;
topic.CreateDate = dalTopic.CreateDate;
}
private Topic ToOrmTopic(DalTopic topic)
{
if (topic == null) return null;
var topictags = topic.TopicTags ?? new List<DalTopicTag>();
var dbSetTopicTag = _context.Set<TopicTag>();
var actualTags = topictags.Select(tag => dbSetTopicTag.SingleOrDefault(tt => tt.Id == tag.Id)).ToList();
var newTopic = new Topic()
{
TopicTags = actualTags,
};
UpdateInfo(newTopic, topic);
return newTopic;
}