Files
2018-lpon-site/lpon_site/frontend/apps.py

92 lines
3.9 KiB
Python

import os
import hashlib
import logging
from io import BytesIO
from django.apps import AppConfig
from django.core.files.base import ContentFile
from PIL import Image as PILImage
from lpon_site.settings import THUMBNAIL_WEBP_QUALITY
# Получаем логгер для текущего модуля
logger = logging.getLogger(__name__)
class FrontendConfig(AppConfig):
name = 'frontend'
verbose_name = 'Сайт lpon.ru'
default_auto_field = 'django.db.models.AutoField'
def ready(self):
from django.contrib import admin
admin.site.site_header = 'Управление LPON'
admin.site.site_title = 'LPON Administrator'
admin.site.index_title = 'Добро пожаловать в LPON'
class CustomFilerConfig(AppConfig):
name = 'filer'
verbose_name = 'Медиафайлы'
@staticmethod
def generate_upload_path_flr(instance, filename):
from filer.utils.generate_filename import randomized
base_path = randomized(instance, filename)
return f'flr/{base_path}'
@staticmethod
def generate_upload_path_flrm(instance, filename):
from filer.utils.generate_filename import randomized
base_path = randomized(instance, filename)
return f'flrm/{base_path}'
class WebPConverter:
def convert_to_webp_if_needed(self, name: str, content):
_, original_ext = os.path.splitext(name)
if original_ext.lower() in [".jpg", ".jpeg", ".png", ".bmp", ".tiff"]:
try:
content.seek(0)
img = PILImage.open(BytesIO(content.read()))
if img.mode == 'CMYK':
img = img.convert('RGB')
buffer = BytesIO()
img.save(buffer, format="WEBP", quality=THUMBNAIL_WEBP_QUALITY)
buffer.seek(0)
new_name = name.rsplit(original_ext, 1)[0] + ".webp"
logger.info(f"Successfully converted '{name}' to '{new_name}' (WebP).")
return ContentFile(buffer.read()), new_name, True
except Exception:
logger.error(f"Error converting '{name}' to WebP.", exc_info=True)
content.seek(0)
return content, name, False
content.seek(0)
return content, name, False
def ready(self):
from filer.fields.multistorage_file import MultiStorageFieldFile
logger.info("Patching MultiStorageFieldFile.save() for WebP conversion...")
original_save = MultiStorageFieldFile.save
webp_converter = self.WebPConverter()
def patched_save(self_instance, name, content, save=True):
new_content, new_name, converted = webp_converter.convert_to_webp_if_needed(name, content)
if converted:
self_instance.instance.mime_type = "image/webp"
if hasattr(self_instance.instance, 'original_filename') and self_instance.instance.original_filename:
original_filename, _ = os.path.splitext(self_instance.instance.original_filename)
self_instance.instance.original_filename = f"{original_filename}.webp"
new_content.seek(0)
file_bytes = new_content.read()
new_content.seek(0)
self_instance.instance._file_size = len(file_bytes)
self_instance.instance.sha1 = hashlib.sha1(file_bytes).hexdigest()
return original_save(self_instance, new_name, new_content, save)
MultiStorageFieldFile.save = patched_save
logger.info("MultiStorageFieldFile.save() patched successfully.")
# Создаем псевдонимы на уровне модуля для функций, чтобы их мог найти Django
generate_upload_path_flr = CustomFilerConfig.generate_upload_path_flr
generate_upload_path_flrm = CustomFilerConfig.generate_upload_path_flrm