Why when I call a method within a middleware does not return an HttpResponse?

[Neto]

Hi,

I have a middleware that checks whether the user is logged in.

class Check(object):

    """
        Check
    """

    @staticmethod
    def process_request(request):

        def is_authenticated_user():

            try:
                request.session['user']
            except KeyError:
                return redirect(reverse('mysite:login'))

        is_authenticated_user()
            

Why it does not works? How to solve?

[술욱]

What's the value of request.session['user'] when user is not logged in?

My guess is it's an instance of AnonymousUser.

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[Neto]

The problem is that when happens the exception, the redirect does not work, only if I put return before is_authenticated_user(), like this:

class Check(object):

    """
        Check
    """

    @staticmethod
    def process_request(request):

        def is_authenticated_user():

            try:
                request.session['user']
            except KeyError:
                return redirect(reverse('mysite:login'))

        return is_authenticated_user()  # why I need put "return" here?
            

[술욱]

because from the exception you return to process_request() and if you
don't return anything None in implied.

> https://groups.google.com/d/msgid/django-users/1c984bab-f08f-4355-8aa2-c6e28b5ee579%40googlegroups.com.