From 57de1bd900c2e75d2400b67e523dd33babf173e1 Mon Sep 17 00:00:00 2001
From: Ferry Boender <ferry.boender@gmail.com>
Date: Thu, 2 Jul 2015 08:10:01 +0200
Subject: [PATCH] Raise ValidationError instead of returning None if a file
 upload was invalid.

---
 src/formdefinition.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/formdefinition.py b/src/formdefinition.py
index ce9607e..4025510 100644
--- a/src/formdefinition.py
+++ b/src/formdefinition.py
@@ -227,8 +227,9 @@ class FormDefinition(object):
         """
         try:
             value = form_values[field_def['name']]
-        except KeyError:
-            return None
+        except KeyError, err:
+            raise ValidationError("Invalid file upload")
+
         field_name = field_def['name']
         upload_fname = form_values[u'{0}__name'.format(field_name)]
         upload_fname_ext = os.path.splitext(upload_fname)[-1].lstrip('.')