I recently wrote a Wordpress XML import (blog posts, comments and tags) for umbraco blog based on Morten Bock's article at http://www.mortenbock.dk/blog/2009/10/13/importing-wordpress-posts-to-umbraco.aspx (I had to adjust a few things, though to make it work with Umbraco 4.5.1 and the Wordpress XML document that I received from the client) and now everythin works correctly except the tags.

I get the tags from the Wordpress XML and add them to each post. When I look at the imported post, the tag is set correctly and the blog:s category list list all tags and the number of posts that are tagged with each tag. The problem is that when I click on a tag to filter on it, I get zero posts.

Upon closer investigation, it seems that the tags are not set in umbraco.config either. But if I go to the post in the Content tree, view the post and press "Save and Publish", umbraco.config is updated and filtering by tags show the post that I have save and published again.

The code that I am using to import posts is:

            XNamespace wpns = XNamespace.Get("http://wordpress.org/export/1.0/");

            XNamespace contentns = XNamespace.Get("http://purl.org/rss/1.0/modules/content/");

            var q = from c in xDocument.Descendants("item")

                    where (string)c.Element(wpns + "post_type") == "post"

                    select c;

            DocumentType dt = DocumentType.GetByAlias("BlogPost");

            User author = User.GetUser(0);

            foreach (XElement item in q)

            {

                string posttitle = (string)item.Element("title");

                string postbody = (string)item.Element(contentns + "encoded");

                string posttags = string.Empty;

                DateTime createdate = DateTime.Parse((string)item.Element(wpns + "post_date"));

                int i = 0;

                foreach (XElement tag in item.Elements("category"))

                {

                    if ((string)tag.Attribute("domain") == "category" &&

                        !string.IsNullOrEmpty(tag.Value))

                    {

                        if (i > 0)

                        {

                            posttags += ",";

                        }

                        posttags += tag.Value;

                        i++;

                    }

                }

                Document doc = Document.MakeNew(posttitle, dt, author, blogPostParentNodeId);

                doc.CreateDateTime = createdate;

                doc.ReleaseDate = createdate;

                doc.getProperty("PostDate").Value = createdate;

                doc.getProperty("bodyText").Value =

                    WordpressPostParser.ParseCodeBlocks(

                        WordpressPostParser.ChangeImageUrls(WordpressPostParser.CreateParagraphTags(postbody), originalHostname, originalMediaFolderUrl, newMediaFolderUrl));

                doc.CreateDateTime = createdate;

                doc.Publish(author);

                if (!string.IsNullOrEmpty(posttags))

                {

                    Tag.AddTagsToNode(doc.Id, posttags, "default");

                }

                doc.Publish(author);

                library.UpdateDocumentCache(doc.Id);

                //comments here...

I have tried a few different versions for adding tags (with and without publish before adding tags, calling save before, ...etc) but nothing works. I have also looked at the blogML importer but it does not seem to import tags at all.

Can anyone see anything wrong with the code?