What is Django custom middleware and how do I create one?

What is Django custom middleware and how do I create one?

Django custom middleware is a way to process requests globally before they reach the view or after the view has processed them. You can create one by defining a class with methods like __init__, __call__, and process_request.

Can you give me an example of a simple middleware?

Sure! Here's a simple example that logs the request path:

class SimpleMiddleware:
    def __init__(self, get_response):
        self.get_response = get_response

    def __call__(self, request):
        print(f'Path: {request.path}')
        response = self.get_response(request)
        return response

How do I add this middleware to my Django project?

You can add your middleware to the MIDDLEWARE list in your settings.py file like this:

MIDDLEWARE = [
    ...,
    'myapp.middleware.SimpleMiddleware',
]

What are some common use cases for custom middleware?

Common use cases include logging, user authentication, modifying request/response objects, and handling CORS.