Ticket #1729: NullPath.diff

db/models/base.py

@@ -282 +282 @@
         return getattr(self, cachename)
 
     def _get_FIELD_filename(self, field):
-        return os.path.join(settings.MEDIA_ROOT, getattr(self, field.attname))
+        if getattr(self, field.attname):
+            return os.path.join(settings.MEDIA_ROOT, 
+                                getattr(self, field.attname))
+        return ''
 
     def _get_FIELD_url(self, field):
         if getattr(self, field.attname): # value is not blank