fix

2013-01-09 14:06:23 +02:00
parent c2dec3fb9d
commit f157702548
1 changed files with 2 additions and 1 deletions
--- a/common/lib/capa/capa/inputtypes.py
+++ b/common/lib/capa/capa/inputtypes.py
@@ -866,7 +866,8 @@ class DragAndDropInput(InputTypeBase):
                                                self.xml.iterchildren('target')]

        # custom background color for labels:
-        label_bg_color = Attribute('label_bg_color').parse_from_xml(self.xml)
+        label_bg_color = Attribute('label_bg_color',
+                                   default=None).parse_from_xml(self.xml)
        if label_bg_color:
            to_js['label_bg_color'] = label_bg_color