few edits to allow proxy ID fields

Author: PetrDlouhy

django_comments_xtd/api/frontend.py

@@ -59,7 +59,7 @@ def _reverse(*args, **kwargs):
         return reverse(*args, **kwargs)
 
     form = CommentSecurityForm(obj)
-    ctype = ContentType.objects.get_for_model(obj)
+    ctype = ContentType.objects.get_for_model(obj, for_concrete_model=False)
     queryset = XtdComment.objects.filter(content_type=ctype,
                                          object_pk=obj._get_pk_val(),
                                          site__pk=get_current_site_id(request),

django_comments_xtd/models.py

@@ -220,6 +220,9 @@ def get_comment_dict(obj):
         return dic_list
 
 
+XtdComment.content_object.for_concrete_model = False
+
+
 def publish_or_unpublish_nested_comments(comment, are_public=False):
     qs = get_model().norel_objects.filter(~Q(pk=comment.id),
                                           parent_id=comment.id)