For anyone who's interested in doing this (and willing to get stuck into recompiling the core Umbraco code base), you should add the following code snippets to the onInit method of the umbraco.editorControls.tags.DataEditor.cs script file: 

string realGroup = "";
 
 
string templateGroupValue = "";
 
 
Document thisPage;
 
thisPage = 
 
new Document(int.Parse(pageId));
 
 
 
if (_group.StartsWith("$")) {
    realGroup = _group.Substring(1);
 
 
  if (realGroup != null) {
        templateGroupValue = thisPage.getRecursiveProperty(realGroup).Value.ToString();
 
 
    if (templateGroupValue != null) {
            _group = templateGroupValue;
        }
    }
}

Just above the line:

tags = umbraco.cms.businesslogic.Tags.Tag.GetTags(int.Parse(pageId), _group);

And then add the getRecursiveProperty method to the umbraco.cms.businesslogic.Content class:

 
 
/// <summary>
 
 
/// Retrieve a Property recursively given the alias
 
 
/// </summary>
 
 
/// <param name="alias">Propertyalias (defined in the documenttype)</param>
 
 
/// <returns>The property with the given alias</returns>
 
 
public Property getRecursiveProperty(string alias)
{
 
 
ContentType ct = this.ContentType;
 
 
if (ct == null)
 
 
return null;
propertytype.
 
PropertyType pt = ct.getPropertyType(alias);
 
 
if (pt == null) {
 
 
    if (this.Parent != null) {
 
 
        Content thisParent = new Content(this.ParentId);
 
 
        return thisParent.getRecursiveProperty(alias);
    } 
 
else {
 
 
        return null;
    }
} 
 
else {
 
 
    return getProperty(pt);
}
}

PS. I should also add that you can then modify the BlogCategories XSLT script to pull the newly limited list of tags (which then allows you to have lists of tags per blog, rather than one global one):

Add the variable declaration:

<xsl:variable name="tagGroup" select="$currentPage/ancestor-or-self::*/customTagGroup"/>

Then modify the tag selection from:

<xsl:for-each select="tagsLib:getAllTagsInGroup('default')/tags/tag">

to:

<xsl:for-each select="tagsLib:getAllTagsInGroup($tagGroup)/tags/tag">

(The "customTagGroup" being a document type property name and also the tag group setting on the tags data type, e.g. "$customTagGroup").

Been thinking on exactly how to do this - perfect. I'll add this to the workitems for B4U. Have you submitted it as a patch to the Umbraco core?

Best,

Benjamin :-)

Hi Benjamin,

I'm not setup to get involved in version controlled changes, so haven't submitted anything to the core. You are more than welcome to take my code above and use it as you wish though!

Kind regards,

Martin

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