1 files changed, 7 insertions(+), 4 deletions(-)

M wiki/views/mixins.py

@@ 13,10 13,13 @@ class ArticleMixin(TemplateResponseMixin):
         self.article = article        
         self.children_slice = []
         if settings.SHOW_MAX_CHILDREN > 0:
-            for child in self.article.get_children(max_num=settings.SHOW_MAX_CHILDREN+1,
-                                                   articles__article__current_revision__deleted=False,
-                                                   user_can_read=request.user):
-                self.children_slice.append(child)
+            try:
+                for child in self.article.get_children(max_num=settings.SHOW_MAX_CHILDREN+1,
+                                                       articles__article__current_revision__deleted=False,
+                                                       user_can_read=request.user):
+                    self.children_slice.append(child)
+            except AttributeError, e:
+                raise Exception("Attribute error most likely caused by wrong MPTT version. Use 0.5.3+.\n\n" + str(e))
         return super(ArticleMixin, self).dispatch(request, *args, **kwargs)
 
     def get_context_data(self, **kwargs):