# HG changeset patch
# User Ludovic Chabant <ludovic@chabant.com>
# Date 1450576978 28800
# Node ID a489162f2a1703a78612a2b9ccbd0c68cc96a299
# Parent  442cf576ae2581c35a485ab756101e7cc8f5fdd5
data: Fix a crash bug when no parent page is set on an iterator.

diff -r 442cf576ae25 -r a489162f2a17 piecrust/data/paginator.py
--- a/piecrust/data/paginator.py	Sat Oct 31 21:46:05 2015 -0700
+++ b/piecrust/data/paginator.py	Sat Dec 19 18:02:58 2015 -0800
@@ -208,7 +208,7 @@
         if self._pgn_filter is not None:
             f.addClause(self._pgn_filter.root_clause)
 
-        if isinstance(self._source, IPaginationSource):
+        if self._parent_page and isinstance(self._source, IPaginationSource):
             sf = self._source.getPaginationFilter(self._parent_page)
             if sf is not None:
                 f.addClause(sf.root_clause)