From a45012b40e24bd834a41eba427d4e92c5e6c60e2 Mon Sep 17 00:00:00 2001
From: Roberto Rosario <Roberto.Rosario.Gonzalez@gmail.com>
Date: Sat, 5 Feb 2011 03:12:23 -0400
Subject: [PATCH] Mark null mimetypes as 'unknown', fixing the mimetype NULL
 not allowed on document save error

---
 apps/documents/models.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/apps/documents/models.py b/apps/documents/models.py
index 745167c418..8c20ea76e0 100644
--- a/apps/documents/models.py
+++ b/apps/documents/models.py
@@ -29,7 +29,9 @@ def get_filename_from_uuid(instance, filename, directory='documents'):
 
 def populate_file_extension_and_mimetype(instance, filename):
     # First populate the file extension and mimetype
-    instance.file_mimetype, encoding = mimetypes.guess_type(filename) or ''
+    instance.file_mimetype, encoding = mimetypes.guess_type(filename)
+    if not instance.file_mimetype:
+         instance.file_mimetype = u'unknown'
     filename, extension = os.path.splitext(filename)
     instance.file_filename = filename
     #remove prefix '.'