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- from django.conf import settings
- from django.http import HttpResponse
- from django.utils.deprecation import MiddlewareMixin
- from .utils import get_view_name
- class XViewMiddleware(MiddlewareMixin):
- """
- Add an X-View header to internal HEAD requests.
- """
- def process_view(self, request, view_func, view_args, view_kwargs):
- """
- If the request method is HEAD and either the IP is internal or the
- user is a logged-in staff member, return a response with an x-view
- header indicating the view function. This is used to lookup the view
- function for an arbitrary page.
- """
- assert hasattr(request, 'user'), (
- "The XView middleware requires authentication middleware to be "
- "installed. Edit your MIDDLEWARE setting to insert "
- "'django.contrib.auth.middleware.AuthenticationMiddleware'."
- )
- if request.method == 'HEAD' and (request.META.get('REMOTE_ADDR') in settings.INTERNAL_IPS or
- (request.user.is_active and request.user.is_staff)):
- response = HttpResponse()
- response.headers['X-View'] = get_view_name(view_func)
- return response
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