# HG changeset patch
# User Thierry Florac <tflorac@ulthar.net>
# Date 1549442312 -3600
# Node ID c04ae9beeb0861fe840844f00267382cc9c5620d
# Parent  a568f98546e8077bc2f79a72880a1588c819863d
Handle error on thumbnail generation if blob is None

diff -r a568f98546e8 -r c04ae9beeb08 src/pyams_file/image.py
--- a/src/pyams_file/image.py	Tue Feb 05 16:43:23 2019 +0100
+++ b/src/pyams_file/image.py	Wed Feb 06 09:38:32 2019 +0100
@@ -80,7 +80,10 @@
         else:
             return None
         # check format
-        image = Image.open(self.context.get_blob(mode='r'))
+        blob = self.context.get_blob(mode='r')
+        if blob is None:
+            return None
+        image = Image.open(blob)
         if not format:
             format = image.format
         format = format.upper()