#-*- coding: utf-8 -*-


class PageHistoryMiddleware(object):
    """
    If the URLs are stale, reload them.
    """
    def process_request(self, request):
        if 'history' not in request.session:
            request.session['history'] = []

        history = request.session['history']

        if not request.current_page:
            return

        page = request.current_page.id
        if page not in history:
            history = history + [page]
            request.session['history'] = history