From 947fa2769df049e859284c958fd0177c34885c3e Mon Sep 17 00:00:00 2001
From: Charles Haley <>
Date: Fri, 10 Sep 2010 09:58:39 +0100
Subject: [PATCH] Fix matching books with no

---
 src/calibre/gui2/device.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/calibre/gui2/device.py b/src/calibre/gui2/device.py
index e002fe916b..3cab6ab21d 100644
--- a/src/calibre/gui2/device.py
+++ b/src/calibre/gui2/device.py
@@ -1357,6 +1357,14 @@ class DeviceMixin(object): # {{{
                         c = self.book_db_id_counts.get(db_id, 0)
                         self.book_db_id_counts[db_id] = c + 1
                     uuid = getattr(book, 'uuid', None)
+                    if uuid is None and db_id is not None:
+                        # Catch the case where a book on the device has no UUID
+                        # but was matched against some book in the library.
+                        try:
+                            uuid = self.library_view.model().db.uuid(db_id,
+                                                               index_is_id=True)
+                        except:
+                            pass
                     if uuid is not None:
                         self.book_db_uuid_cache[i].add(uuid)
                         self.book_db_uuid_path_map[uuid] = book.path