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Make get_categories respect a search restriction that finds no books. This is an incompatible change, as [] used to mean no restriction and now it means no books. Tested with tag browser and content server.

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This commit is contained in:
Charles Haley 2011-06-27 17:18:51 +01:00
parent 4bf6fe6eb4
commit 2ae0cc048d
1 changed files with 2 additions and 2 deletions
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src/calibre/library/database2.py
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@ -1442,7 +1442,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
raise ValueError('sort ' + sort + ' not a valid value')
self.books_list_filter.change([] if not ids else ids)
id_filter = None if not ids else frozenset(ids)
id_filter = None if ids is None else frozenset(ids)
tb_cats = self.field_metadata
tcategories = {}
@ -1520,7 +1520,7 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
rating_dex = self.FIELD_MAP['rating']
tag_class = LibraryDatabase2.TCat_Tag
for book in self.data.iterall():
if id_filter and book[id_dex] not in id_filter:
if id_filter is not None and book[id_dex] not in id_filter:
continue
rating = book[rating_dex]
# We kept track of all possible category field_map positions above