public static Tag ToModel(this DalTagEntity item)
{
if (item == null)
return null;
Tag tagEntity = new Tag
{
Id = item.Id,
Name = item.Name,
ArticleId = item.Article.Id
};
return tagEntity;
}
public static void CopyFieldsTo(this DalTag source, Tag target)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (target == null)
{
throw new ArgumentNullException("target");
}
target.Name = source.Name;
}
/// <summary>
/// Change properties for specified article and set new tags.
/// </summary>
/// <param name="article"></param>
/// <param name="tags"></param>
public void Edit(DalArticle article, string[] tags)
{
if (article == null)
throw new ArgumentNullException(nameof(article));
if (tags == null)
tags = new string[0];
Article ormArticle = context.Set<Article>().Find(article.Id);
if (article.Content != null)
ormArticle.Content = article.Content;
if (article.Title != null)
ormArticle.Title = article.Title;
DbSet<Tag> tagSet = context.Set<Tag>();
foreach (Tag tag in ormArticle.Tags)
{
//TODO optimize here
//tag.Articles.Remove(ormArticle);
var t = tag.Articles.ToList();
t.Remove(ormArticle);
tag.Articles = t;
}
ormArticle.Tags = new List<Tag>();
foreach (string tag in tags)
{
Tag ormTag = tagSet.FirstOrDefault(x => x.Value == tag);
if (ormTag == null)
{
ormTag = new Tag() { Value = tag };
tagSet.Add(ormTag);
}
//TODO optimize here
var list = ormTag.Articles.ToList();
list.Add(ormArticle);
ormTag.Articles = list;
//tagSet.Add(ormTag);
ormArticle.Tags.Add(ormTag);
}
}
