From 08d7a000c95eb91e9d31eb6af27a74868f6851b1 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 12 Jan 2011 11:40:46 -0700
Subject: [PATCH] Prevent custom columns from overriding the information shown
 in the book details panel

---
 src/calibre/gui2/library/models.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/calibre/gui2/library/models.py b/src/calibre/gui2/library/models.py
index 38a4b28744..eea452c238 100644
--- a/src/calibre/gui2/library/models.py
+++ b/src/calibre/gui2/library/models.py
@@ -358,8 +358,9 @@ class BooksModel(QAbstractTableModel): # {{{
             name, val = mi.format_field(key)
             if mi.metadata_for_field(key)['datatype'] == 'comments':
                 name += ':html'
-            if val:
+            if val and name not in data:
                 data[name] = val
+
         return data