Not returning properties and/or categories in custom namespaces
Check, whether by the time you set $smwgNamespacesWithSemanticLinks[NS_BLOG] = true; NS_BLOG is defined. This implies that Wikilog::setupNamespace( 500, 'Blog', 'Blog_talk' ); has already been invoked.
It is, yes.
You can call $wgDebugComments = true; wfDebug ('NS_BLOG = ' . NS_BLOG); to check the value of the constant.
Not quite sure what I'm doing with this - shove them both in LocalSettings? Doing so gets me a new error: Fatal error: Call to undefined function wfDebug() in /home/xmm/public_html/w/LocalSettings.php on line 223
Did you find the solution? I have the same problem, although with different defintion of namespaces. See my latest post about this issue (saw this post right after that..).
I never did! Eventually sort of gave up, though I pop in occasionally to see if anything new has come up. I'll keep an eye on your post!
Sorry to not have better news.
It looks to me like this should be a very simple fix, if I'm reading things right...
First of all, you should switch to using defined constants instead of magic numbers:
## Define namespaces define( "NS_BLOG", 500 );
...as kgh recommended. Of course, you could just use the magic number 500 in both places, but it's better to use a defined constant to prevent mistakes.
Then register your namespace using the wikilog extension using your defined constant instead of the magic number "500":
Wikilog::setupNamespace(NS_BLOG, 'Blog', 'Blog_talk' );
...i.e., that's the same as writing
$wgExtraNamespaces[NS_BLOG] = "Blog"; to declare the new namespace, except it also does some additional setup related to the Wikilog extension, and ensures you declare the namespace correctly.
Now your namespace is set up, set it to allow semantic properties by adding
$smwgNamespacesWithSemanticLinks[NS_BLOG] = true;
...hope that helps.
I tried a large number of things until I figured out that I was making my smwgNamespacesWithSemanticLinks declarations *before* the enableSemantics call. When I moved them after it (as described in the documentation, although only briefly), everything started working great.