Create middleware directory

bookwyrm/middleware/__init__.py

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+from timezone_middleware import TimezoneMiddleware

bookwyrm/middleware/timezone_middleware.py

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+""" Makes the app aware of the users timezone """
+import pytz
+
+from django.utils import timezone
+
+
+class TimezoneMiddleware:
+    """Determine the timezone based on the request"""
+
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        if request.user.is_authenticated:
+            timezone.activate(pytz.timezone(request.user.preferred_timezone))
+        else:
+            timezone.activate(pytz.utc)
+        response = self.get_response(request)
+        timezone.deactivate()
+        return response