Functioning request.user, and a functioning greeting for users :)

mediagoblin/templates/mediagoblin/base.html

@@ -29,7 +29,7 @@
             <tr>
               <td></td>
               <td>
-                Welcome {{ user['username'] }}! --
+                Welcome {{ request.user['username'] }}! --
                 <a href="{{ request.urlgen('mediagoblin.auth.logout') }}">
                   Logout</a>
               </td>

mediagoblin/util.py

@@ -34,12 +34,14 @@ def setup_user_in_request(request):
     appropriate.
     """
     if not request.session.has_key('user_id'):
+        request.user = None
         return
 
     user = None
 
     try:
-        user = request.db.User.one({'_id': request.session['user_id']})
+        user = request.db.User.one(
+            {'_id': mongokit.ObjectId(request.session['user_id'])})
         
         if not user:
             # Something's wrong... this user doesn't exist?  Invalidate