Middleware hooks working on functional middleware is not documented

[Aarni Koskela]

Middleware hooks like process_exception, process_template_response, process_view factually work on function middleware (though process_template_response requires a gentle adjustment to how middleware name is computed).

This is undocumented behavior, so it would probably be best to codify it in documentation.

[Aarni Koskela]

​https://github.com/django/django/pull/20954

[Tim McCurrach]

I'm not aware of this being a duplicate ticket, but it does appear to be a duplicate of these existing PRs:
​https://github.com/django/django/pull/19856
​https://github.com/django/django/pull/19857

My tuppence worth is that it's kind of an implementation detail that the hooks happen to work with function-based middleware. Whilst I don't have much objection to documenting them (and so officially supporting them), I really can't imagine a scenario where I would ever want to write middleware by decorating a function with these hooks. Maybe there is a use-case though??

[Natalia Bidart]

I agree with Tim that there is no gain in documenting this nor a necessary commitment to ensure this works in the long term. Closing accordingly.