Posts tagged with "python"

Just recently I wanted to create a custom middleware to augment the request object by adding an additional attribute to it. But I wanted this attribute to be lazy evaluated. If you have experience building with Django you should know that it offers lazy functions like reverse_lazy. Looking at the internals of how such things work, I've found that Django offers a module django.utils.functional.py that contains interesting functions and classes.

I liked SimpleLazyObject and found that it is used in the middleware calleddjango.contrib.auth.middleware.AuthenticationMiddleware.