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Write redirects in Python for Plone CMS

Project Description


collective.scriptedredirect allows you to write HTTP 302 Moved Temporary and HTTP 301 Moved Permanently redirects for your Plone CMS site in Python code.


  • The redirect logic is front-end web server independent: no need to touch variouos configuration files of Apache, Varnish or Nginx)
  • Python allows to write more complex logic for redirects easier - no regular expressions!
  • Python scripts in Plone have access to more complete state information: user logged in status, permissions, etc.



Add add-on in buildout.cfg:

eggs =

Run buildout.

Install Scripted redirects in Python in Site Setup > Add-ons.

Doing redirects through the web

Edit redirect_handler in Zope Management Interface in your site root.

In the case of accident use ?no_redirect HTTP query parameter to override the redirecter and fix your site.

Doing redirects through the web

You can also register a browser view called redirect_handler. In this case, you write the redirect code in addon Python code and not through the web.

redirect_handler view is always preferred over redirect_handler script.

Example Python code in

class TestingRedirectHandler(object):
    """ Redirect handler registered as a ``redirect_handler`` Zope 3 <browser:page>

    def __init__(self, context, request):
        self.context = context
        self.request = request

    def __call__(self, url, host, port, path):
        :return: None if no redirect needed, otherwise a string full HTTP URL to the redirect target

        :raise: zExceptions.Redirect or other custom redirect exception if needed

        # Simple example: always access site over www. domain prefix
        if not url.startswith("http://www."):
            return url.replace("http://", "http://www.")

        # Don't redirect if we are already using www. prefix
        return None

Example ZCML:



collective.scriptedredirect hooks itself to Zope’s pre-traversal hook and is triggered before the request traverses into your Plone site in Zope application server.


Mikko Ohtamaa (blog, Facebook, Twitter, Google+)


1.1.1 (2013-04-14)

  • Fixed .rst title levels for PyPi [miohtama]

1.1 (2013-04-14)

  • Added redirects via browser view support [miohtama]
  • Testing, Travis CI support [miohtama]


  • Initial development [miohtama]
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