Bug downloading roadmap as ical when all priorities have been deleted

[trasgu]

When no priorities are set, if you try to export roadmap as ical you get

Oops...
Trac detected an internal error: 'priority'
Traceback (most recent call last)
...

Here is a diff with the fix:

--- model.back.py       2007-03-06 11:15:50.000000000 +0100
+++ model.py    2007-03-06 11:05:00.000000000 +0100
@@ -104,7 +104,10 @@
                 self.values[name] = value
 
     def __getitem__(self, name):
-        return self.values[name]
+        if self.values.has_key(name):
+            return self.values[name]
+        else:
+            return '';
 
     def __setitem__(self, name, value):
         """Log ticket modifications so the table ticket_change can be updated"""

[Christian Boos]

In milestone:0.11, __getitem__ does a return self.values.get(name), so this is not a problem anymore.