plugin forums: first draft:

this plugin handle forums hierarchy, where forums link to topics which themselves link to blog nodes.

src/plugins/plugin_xep_0060.py

@@ -148,7 +148,10 @@ class XEP_0060(object):
         @param extra(dict): extra data used to configure request
         @return(Extra): filled Extra instance
         """
-        if extra is not None:
+        if extra is None:
+            rsm_request = None
+            extra = {}
+        else:
             # rsm
             rsm_args = {}
             for arg in ('max', 'after', 'before', 'index'):
@@ -189,9 +192,6 @@ class XEP_0060(object):
             if mam_args:
                 assert 'mam' not in extra
                 extra['mam'] = mam.MAMRequest(mam.buildForm(**mam_args))
-        else:
-            rsm_request = None
-            extra = {}
         return Extra(rsm_request, extra)
 
     def addManagedNode(self, node, **kwargs):