mirror of
https://github.com/fastapi-practices/fastapi-best-architecture.git
synced 2026-09-21 13:12:24 +00:00
Dylan
cd48bb4210
* feat: i18n support * Optimize i18n * Update the locale in the code * Update the zh-CN file * Update the en-US file * Update the reload filter * Update locale success plugin value * Fix lint * Update pydantic error message translation * Update to minimal implementation * Fix minimal missing code
58 lines
1.5 KiB
Python
58 lines
1.5 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
from functools import lru_cache
|
|
from typing import Callable
|
|
|
|
from fastapi import Request, Response
|
|
from starlette.middleware.base import BaseHTTPMiddleware
|
|
|
|
from backend.common.i18n import i18n
|
|
|
|
|
|
class I18nMiddleware(BaseHTTPMiddleware):
|
|
"""国际化中间件"""
|
|
|
|
async def dispatch(self, request: Request, call_next: Callable) -> Response:
|
|
"""
|
|
处理请求并设置国际化语言
|
|
|
|
:param request: FastAPI 请求对象
|
|
:param call_next: 下一个中间件或路由处理函数
|
|
:return:
|
|
"""
|
|
language = self.get_current_language(request)
|
|
|
|
# 设置国际化语言
|
|
if language and i18n.current_language != language:
|
|
i18n.current_language = language
|
|
|
|
response = await call_next(request)
|
|
|
|
return response
|
|
|
|
@lru_cache(maxsize=128)
|
|
def get_current_language(self, request: Request) -> str | None:
|
|
"""
|
|
获取当前请求的语言偏好
|
|
|
|
:param request: FastAPI 请求对象
|
|
:return:
|
|
"""
|
|
accept_language = request.headers.get('Accept-Language', '')
|
|
if not accept_language:
|
|
return None
|
|
|
|
languages = [lang.split(';')[0] for lang in accept_language.split(',')]
|
|
lang = languages[0].lower().strip()
|
|
|
|
# 语言映射
|
|
lang_mapping = {
|
|
'zh': 'zh-CN',
|
|
'zh-cn': 'zh-CN',
|
|
'zh-hans': 'zh-CN',
|
|
'en': 'en-US',
|
|
'en-us': 'en-US',
|
|
}
|
|
|
|
return lang_mapping.get(lang, lang)
|