public Article AddArticle(Article toAdd)
{
toAdd.PostedOn = DateTime.UtcNow;
this.articles.SaveChanges();
return toAdd;
}
public IQueryable<Article> UpdateArticle(Article update)
{
update.PostedOn = DateTime.UtcNow;
this.articles.Update(update);
this.articles.SaveChanges();
return this.articles.All().Where(a => a.Id == update.Id);
}