115 lines
5.3 KiB
Python
115 lines
5.3 KiB
Python
import os
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import hashlib
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import logging
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from io import BytesIO
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from django.apps import AppConfig
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from django.core.files.base import ContentFile
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from PIL import Image as PILImage
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from lpon_site.settings import (
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THUMBNAIL_WEBP_QUALITY,
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FILER_ENABLE_PERMISSIONS,
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FILER_UPLOADER_MAX_FILE_SIZE,
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FILER_WHITELIST_FOR_PATH_ACCESS,
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MIME_TYPE_WHITELIST,
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FILE_VALIDATORS,
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)
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# Получаем логгер для текущего модуля
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logger = logging.getLogger(__name__)
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# ==============================================================================
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# Конфигурация приложения для фронтенда lpon
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# ==============================================================================
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class FrontendConfig(AppConfig):
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name = 'frontend'
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verbose_name = 'Сайт lpon.ru'
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default_auto_field = 'django.db.models.AutoField'
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def ready(self):
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from django.contrib import admin
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admin.site.site_header = 'Управление LPON'
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admin.site.site_title = 'LPON Administrator'
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admin.site.index_title = 'Добро пожаловать в LPON'
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# ==============================================================================
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# Кастомная конфигурация для django-filer
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# - Патчинг MultiStorageFieldFile.save() для автоматической конвертации в WebP
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#
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# Все параметры конфигурации (MIME_TYPE_WHITELIST, FILER_WHITELIST_FOR_PATH_ACCESS и т.д.)
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# определены в settings.py и импортируются оттуда.
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# Удаление префикса filer_public_thumbnails/ достигается через THUMBNAIL_OPTIONS в settings.py
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# ==============================================================================
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class CustomFilerConfig(AppConfig):
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name = 'filer'
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verbose_name = 'Медиафайлы'
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# ========================================================================
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# Атрибуты конфигурации Django-Filer (импортированы из settings.py)
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# Единое место правды - settings.py
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# ========================================================================
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FILER_ENABLE_PERMISSIONS = FILER_ENABLE_PERMISSIONS
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FILER_UPLOADER_MAX_FILE_SIZE = FILER_UPLOADER_MAX_FILE_SIZE
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FILER_WHITELIST_FOR_PATH_ACCESS = FILER_WHITELIST_FOR_PATH_ACCESS
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MIME_TYPE_WHITELIST = MIME_TYPE_WHITELIST
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FILE_VALIDATORS = FILE_VALIDATORS
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@staticmethod
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def _convert_to_webp_if_needed(name: str, content):
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"""
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Преобразует загруженное изображение в WebP формат.
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Поддерживает JPEG, PNG, BMP и TIFF.
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"""
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_, original_ext = os.path.splitext(name)
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if original_ext.lower() in [".jpg", ".jpeg", ".png", ".bmp", ".tiff"]:
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try:
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content.seek(0)
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img = PILImage.open(BytesIO(content.read()))
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if img.mode == 'CMYK':
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img = img.convert('RGB')
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buffer = BytesIO()
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img.save(buffer, format="WEBP", quality=THUMBNAIL_WEBP_QUALITY)
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buffer.seek(0)
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new_name = os.path.splitext(name)[0] + ".webp"
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logger.info(f"Successfully converted '{name}' to '{new_name}' (WebP).")
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return ContentFile(buffer.read()), new_name, True
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except Exception:
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logger.error(f"Error converting '{name}' to WebP.", exc_info=True)
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content.seek(0)
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return content, name, False
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content.seek(0)
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return content, name, False
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def ready(self):
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"""
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Готовимся к работе: патчим MultiStorageFieldFile.save() для WebP конвертации.
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"""
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from filer.fields.multistorage_file import MultiStorageFieldFile
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logger.info("Patching MultiStorageFieldFile.save() for WebP conversion...")
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original_save = MultiStorageFieldFile.save
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def patched_save(self_instance, name, content, save=True):
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# Преобразуем загруженный файл в WebP если требуется
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new_content, new_name, converted = CustomFilerConfig._convert_to_webp_if_needed(name, content)
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if converted:
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# Обновляем свойства файла для WebP версии
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self_instance.instance.mime_type = "image/webp"
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if hasattr(self_instance.instance, 'original_filename') and self_instance.instance.original_filename:
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original_filename, _ = os.path.splitext(self_instance.instance.original_filename)
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self_instance.instance.original_filename = f"{original_filename}.webp"
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# Сохраняем размер и контрольную сумму WebP файла
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new_content.seek(0)
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file_bytes = new_content.read()
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new_content.seek(0)
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self_instance.instance._file_size = len(file_bytes)
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self_instance.instance.sha1 = hashlib.sha1(file_bytes).hexdigest()
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return original_save(self_instance, new_name, new_content, save)
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MultiStorageFieldFile.save = patched_save
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logger.info("MultiStorageFieldFile.save() patched successfully.")
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