middleware for display page when method is not allowed https://docs.djangoproject.com/en/1.2/topics/http/decorators/#allowed-http-methods

middleware.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from django.http import HttpResponseNotAllowed
from django.template import RequestContext
from django.template import loader

class HttpResponseNotAllowedMiddleware(object):
    def process_response(self, request, response):
        if isinstance(response, HttpResponseNotAllowed):
            context = RequestContext(request)
            response.content = loader.render_to_string("app/error_405.html", context_instance=context)
        return response