bugfix : on vérifie que le parent implémente bien l'interface d'ordonancement.

diff --git a/catalog_adapters.py b/catalog_adapters.py
index 64130ad..86b2c3b 100644 (file)
--- a/catalog_adapters.py
+++ b/catalog_adapters.py
@@ -1,7 +1,9 @@
 from Products.CMFCore.CatalogTool import IndexableObjectWrapper
+from OFS.interfaces import IOrderedContainer
 
 class PlinnIndexableObjectWrapper(IndexableObjectWrapper) :
     def position(self) :
         parent = self.getParentNode()
-        pos = parent.getObjectPosition(self.getId())
-        return pos
\ No newline at end of file
+        if IOrderedContainer.providedBy(parent) :
+            pos = parent.getObjectPosition(self.getId())
+            return pos
\ No newline at end of file