如何在 Django 中间件中执行内容协商？

Question

假设我有一个自定义 Django Middleware，如果没有 return rest_framework Response., [=14=，则检查请求 header 有 jwt 令牌]

middleware.py

@staticmethod
def process_view(request, view_func, view_args, view_kwargs):
    try:
        jwt_token = request.headers["token"]
    except KeyError:
        response = Response(status=status.HTTP_403_FORBIDDEN)
        return response

但我收到类似

的错误

.accepted_renderer not set on Response

如何在这里执行content-negotiation？

Answer 1

我认为您使用的是 DRF's Response class.

你应该使用 Django's HttpResponse class 作为，

# middleware.py
<b>from django.http.response import HttpResponse</b>


@staticmethod
def process_view(request, view_func, view_args, view_kwargs):
    try:
        jwt_token = request.headers["token"]
    except KeyError:
        <b>response = HttpResponse(status=403)</b>
        return response

更新-1

我不确定这个方法是好还是坏，但效果很好。

创建一个虚拟视图，即 return DRF Response 并将其用于 return 响应。

from rest_framework.response import Response
from rest_framework.decorators import api_view


<b>@api_view()
def custom_view(request):
    return Response(status=403)</b>


class Foo(...):

    @staticmethod
    def process_view(request, view_func, view_args, view_kwargs):
        try:
            jwt_token = request.headers["token"]
        except KeyError:
            <b>return custom_view(request)</b>

如何在 Django 中间件中执行内容协商？

How to perform content negotiation in django middleware?

django

django-middleware

django-rest-framework

python-3.6

django-2.2

更新-1