From fb5e5f89b6e80076f2ce940a4a940aebc164922f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20P=C3=A9ters?= <fpeters@entrouvert.com>
Date: Thu, 5 Nov 2015 13:04:09 +0100
Subject: [PATCH 3/4] forms: don't restore empty fields for drafts (#8878)

---
 wcs/forms/root.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/wcs/forms/root.py b/wcs/forms/root.py
index 4d9f9ac..c35809a 100644
--- a/wcs/forms/root.py
+++ b/wcs/forms/root.py
@@ -1037,6 +1037,9 @@ class FormPage(Directory):
         magictoken = randbytes(8)
         filled.feed_session()
         form_data = filled.data
+        for field, value in form_data.items():
+            if value is None:
+                del form_data[field]
         form_data['draft_formdata_id'] = filled.id
         form_data['page_no'] = filled.page_no
         session.add_magictoken(magictoken, form_data)
-- 
2.6.2