class PaginationMiddleware(object):
    """
    Inserts a variable representing the current page onto the request object if
    it exists in either **GET** or **POST** portions of the request.
    """
    def process_request(self, request):
        try:
            request.page = int(request.REQUEST['page'])
        except (KeyError, ValueError):
            request.page = 1

    def process_view(self, request, view_func, view_args, view_kwargs):
        if 'paginate' in view_kwargs:
            del view_kwargs['paginate']

            if 'page_url' in view_kwargs:
                request.page_url = view_kwargs['page_url']
                del view_kwargs['page_url']

            if 'page' in view_kwargs:
                request.page = int(view_kwargs['page'])
                del view_kwargs['page']
            else:
                request.page = 1