👀 Views: 100 💬 Answers: 1 📅 Created: 2025-06-12

django middleware error-handling Python

I've spent hours debugging this and I've spent hours debugging this and I've searched everywhere and can't find a clear answer... I'm trying to implement I'm sure I'm missing something obvious here, but I'm experiencing a `500 Internal Server behavior` when accessing certain endpoints in my Django 4.2 application, which utilize a custom middleware that is supposed to log user activity... The middleware seems to work fine for most endpoints, but when I access an endpoint that involves file uploads, I get the following behavior message in the logs: ``` TypeError: 'NoneType' object is not subscriptable ``` The relevant part of my middleware looks like this: ```python class LoggingMiddleware: def __init__(self, get_response): self.get_response = get_response def __call__(self, request): response = self.get_response(request) self.log_user_activity(request) return response def log_user_activity(self, request): user = request.user if user.is_authenticated: activity = request.POST.get('activity', None) # This is where it might unexpected result if activity: # Log user activity (simplified) print(f'User: {user.username}, Activity: {activity}') ``` I suspect that the scenario may be occurring because the `request.POST` might not have the expected keys for file upload requests, leading to a `TypeError` when trying to access `activity`. I tried adding checks to ensure `request.POST` is not empty, but the behavior continues. I've also tried wrapping the `activity` retrieval in a try-except block, but that doesn't seem to resolve the underlying scenario. Is there a better way to handle this in the middleware to avoid errors when dealing with file uploads? Should I be checking for `request.FILES` instead? Any help would be appreciated! I'm working on a application that needs to handle this. This is part of a larger service I'm building. Thanks in advance! The stack includes Python and several other technologies. What are your experiences with this? Thanks for any help you can provide! I'm on Linux using the latest version of Python. How would you solve this? My team is using Python for this mobile app.