How to redirect user to login page from middleware in django rest framework?

Question

I'm working with django rest framework to build my api, and in the front end I'm using Angular framework.

I developed a custom middleware that intercepts every request. I want to logout the user when the condition is not satisfied.

class MyCustomMiddleware(MiddlewareMixin):
    def process_request(self, request):
        if not request.user.is_authenticated():
            #user is not allowed to do this request 
             #logout the user

I know that from the backend I can't redirect the user to the login page, it's a front end staff, but I want to send a notification or something to the front end to tell it that it should redirect the user to the login page.

I have tried to raise PermissionError and HTTP_403_FORBIDDEN but none of them worked.

I thought about adding some thing (attribute/parameter) in the header of the request so that in front end interceptor I test if that attribute/parameter exists, but I couldn't find a way for that.

I also tried to set the user of the request to None : request.user=None but it also failed.

Could somebody tell me if this is possible or not at first?

If so how can I achieve this?

Thanks a lot.

Answer 1

I found it :D

from django.http.response import HttpResponseForbidden


class MyCustomMiddleware(MiddlewareMixin):
   def process_request(self, request):
      if not request.user.is_authenticated():
         #user is not allowed to do this request 
         return HttpResponseForbidden()

it was just to raise a 403 error and from front end side I read the status code of the error, if its 403 then redirect the user to the login page.

I Hope it helps somebody in the future.