Illustrations/web/core/context_processors.py

46 lines
1.9 KiB
Python

from django.contrib.staticfiles import finders
import os
def available_themes(request):
"""
Return clean theme names by scanning /static/themes/*.css.
Works whether finder paths are 'themes/xxx.css' or '.../themes/xxx.css'
and collapses fingerprinted files (e.g., midnight.400a2f.css -> midnight).
"""
bases = set()
for finder in finders.get_finders():
# 1) Try listing the 'themes' directory directly (some storages support this)
try:
for path, storage in finder.list(['themes']):
if path.endswith('.css'):
filename = os.path.basename(path)[:-4] # drop .css
base = filename.split('.', 1)[0] # drop fingerprint
if base:
bases.add(base)
except Exception:
pass
# 2) Fallback: list everything and filter anything under /themes/
try:
for path, storage in finder.list([]):
if path.endswith('.css') and ('/themes/' in path or path.startswith('themes/')):
filename = os.path.basename(path)[:-4]
base = filename.split('.', 1)[0]
if base:
bases.add(base)
except Exception:
pass
# If scan found nothing (e.g., dev env quirk), propose common themes
if not bases:
candidates = ["classic", "dawn", "forest", "midnight", "mint", "sandstone"]
for name in candidates:
if finders.find(f"themes/{name}.css"):
bases.add(name)
# Order: preferred list first, then alphabetical for anything else
preferred = ["classic", "dawn", "forest", "midnight", "mint", "sandstone", "original"]
names = sorted(bases, key=lambda n: (preferred.index(n) if n in preferred else len(preferred)+1, n))
return {"available_themes": names}