Check if a function has a decorator

Build your own login_required decorator and have it mark the function as decorated--probably the best place to mark it would be in the func_dict.

from django.contrib.auth.decorators import login_required as django_l_r# Here you're defining your own decorator called `login_required`# it uses Django's built in `login_required` decoratordef login_required(func):    decorated_func = django_l_r(func)    decorated_func.func_dict['login_is_required'] = True    return decorated_func@login_required # Your decoratordef authenticatedd_view(request):    passdef unauthenticated_view(request):    pass

Now you can check to see if a view was decorated like this...

# Assume `a_view` is view function>>> a_view.func_dict.get('login_is_required',False)

If you're confused about Python decorators see this SO question/answer: How to make a chain of function decorators?

It seems that your situation is as follows:1. You have pages that are secured and behind a login-required decorator2. You have pages that are non-secure and can be visited in both a logged-in state and anonymous state.

If I understand your requirements, you want a user to be redirected to Main Page (Assuming this to be the Welcome Page that can be visited in both a logged-in and Anonymous state) when a user logs out.

Why wouldn't you just limit the user's ability to logout from only secure pages, and then set your redirect_url on logout to the welcome screen?