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library: fix thumbnail lookup for templated filenames

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Library thumbnails are saved by post_id (_copy_library_thumb uses
f"{post.id}.jpg") but the library viewer looked them up by file
stem (f"{filepath.stem}.jpg"). For digit-stem files (12345.jpg)
these are the same. For templated files (artist_12345.jpg) the
stem is "artist_12345" which doesn't match the thumbnail named
"12345.jpg" — wrong or missing thumbnails.

Fix: resolve post_id from the filename via
get_library_post_id_by_filename, then look up the thumbnail as
f"{post_id}.jpg". Generated thumbnails (for files without a
cached browse thumbnail) also store by post_id now, so
everything stays consistent.
This commit is contained in:
pax 2026-04-09 23:04:02 -05:00
parent 64f0096f32
commit 31089adf7d
1 changed files with 11 additions and 1 deletions
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12
booru_viewer/gui/library.py
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@ -189,7 +189,17 @@ class LibraryView(QWidget):
thumb._cached_path = str(filepath) thumb._cached_path = str(filepath)
thumb.setToolTip(filepath.name) thumb.setToolTip(filepath.name)
thumb.set_saved_locally(True) thumb.set_saved_locally(True)
cached_thumb = lib_thumb_dir / f"{filepath.stem}.jpg" # Thumbnails are stored by post_id (from _copy_library_thumb),
# not by filename stem. Resolve post_id so templated filenames
# like artist_12345.jpg find their thumbnail correctly.
thumb_name = filepath.stem # default: digit-stem fallback
if self._db:
pid = self._db.get_library_post_id_by_filename(filepath.name)
if pid is not None:
thumb_name = str(pid)
elif filepath.stem.isdigit():
thumb_name = filepath.stem
cached_thumb = lib_thumb_dir / f"{thumb_name}.jpg"
if cached_thumb.exists(): if cached_thumb.exists():
pix = QPixmap(str(cached_thumb)) pix = QPixmap(str(cached_thumb))
if not pix.isNull(): if not pix.isNull():