Display proposal result status in proposal admin change lists

feedback from pycon development

commit 3401cdd8253d86e166d980a1d1eb5ba2de01932d
Author: Dan Poirier <dpoirier@caktusgroup.com>
Date:   Thu Jun 6 15:10:57 2013 -0400

Signed-off-by: Hiroshi Miura <miurahr@linux.com>

symposion/proposals/models.py

@@ -8,6 +8,7 @@
 from django.utils.timezone import now
 
 from django.contrib.auth.models import User
+from django.core.exceptions import ObjectDoesNotExist
 
 import reversion
 
@@ -124,6 +125,13 @@ def speaker_email(self):
     def number(self):
         return str(self.pk).zfill(3)
 
+    @property
+    def status(self):
+        try:
+            return self.result.status
+        except ObjectDoesNotExist:
+            return 'undecided'
+
     def speakers(self):
         yield self.speaker
         speakers = self.additional_speakers.exclude(