Custom Middleware in Django with Exclusions

Question

I require to check authentication via token during execution of certain views, while some views can be accessed without authentication. So, how do i make a middleware and exclude some views from it. Any other idea to solve this is appreciated.

Answer 1

I would suggest taking inspiration from the csrf middleware that Django provides

from django.utils.deprecation import MiddlewareMixin

class MyAuthenticationMiddleware(MiddlewareMixin):

    def process_view(self, request, callback, callback_args, callback_kwargs):

        if getattr(callback, 'my_exempt_flag', False):
            return None

        # Authentication goes here
        # Return None if authentication was successful
        # Return a HttpResponse with some error status if not successful

And create a decorator to wrap your views

from functools import wraps

def exempt_from_my_authentication_middleware(view_func):
    def wrapped_view(*args, **kwargs):
        return view_func(*args, **kwargs)
    wrapped_view.my_exempt_flag = True
    return wraps(view_func)(wrapped_view)

Can be used like so

@exempt_from_my_authentication_middleware
def my_view(request):
    # TODO