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newdb: Handle databases with invalid ratings link tables

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Fixes #1228517 [crashes on change library](https://bugs.launchpad.net/calibre/+bug/1228517)
This commit is contained in:
Kovid Goyal 2013-09-22 17:24:07 +05:30
parent 50beda31ae
commit 3e522c4e15
1 changed files with 8 additions and 2 deletions
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10
src/calibre/db/fields.py
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@ -452,8 +452,11 @@ class ManyToOneField(Field):
@property
def book_value_map(self):
return {book_id:self.table.id_map[item_id] for book_id, item_id in
try:
return {book_id:self.table.id_map[item_id] for book_id, item_id in
self.table.book_col_map.iteritems()}
except KeyError:
raise InvalidLinkTable(self.name)
class ManyToManyField(Field):
@ -514,8 +517,11 @@ class ManyToManyField(Field):
@property
def book_value_map(self):
return {book_id:tuple(self.table.id_map[item_id] for item_id in item_ids)
try:
return {book_id:tuple(self.table.id_map[item_id] for item_id in item_ids)
for book_id, item_ids in self.table.book_col_map.iteritems()}
except KeyError:
raise InvalidLinkTable(self.name)
class IdentifiersField(ManyToManyField):