getSelectionParams should use {} instead of [] for the default return value.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@1206 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Form/SelectionTool.py

@@ -150,10 +150,10 @@ class SelectionTool( UniqueObject, SimpleItem ):
       """
         Returns the params in the selection
       """
-      if params is None: params = []
+      if params is None: params = {}
       selection = self.getSelectionFor(selection_name, REQUEST=REQUEST)
       if selection is not None:
-        if len(selection.selection_columns) > 0:
+        if len(selection.selection_params) > 0:
           return selection.getSelectionParams()
         else:
           return params