val opts = User.currentUser match {
	case Full(u: User) => OrderBy(Post.publishDate, Ascending))
	case _ => By(Post.published, true), By_<(Post.publishDate, new Date), OrderBy(Post.publishDate, Ascending)
}
object posts extends MappedManyToMany(PostTags, PostTags.tag, PostTags.post, Post, opts)