tolerate empty result set when retrieving first row (e.g. for getting header information)

2012-05-09 13:39:09 +02:00 · 2012-05-09 13:39:09 +02:00 · 3beae86d4d
commit 3beae86d4d
parent 78bdb5f6d0
1 changed files with 3 additions and 1 deletions
--- a/composer/report/result.py
+++ b/composer/report/result.py
@ -83,7 +83,9 @@ class ResultSet(object):
        return iter(self.result)

    def first(self):
-        return self.result[0]
+        if len(self.result) > 0:
+            return self.result[0]
+        return self.rowFactory(None, self)

    @Lazy
    def displayedColumns(self):