Link redirect is wrong when the site is not on the host root (eg /thesite) or when using VHM with the _vh_ virtualpath about plone.app.contenttypes HOT 1 CLOSED

def replace_link_variables_by_paths(context, url):
    """Take an `url` and replace the variables "${navigation_root_url}" and
    "${portal_url}" by the corresponding paths. `context` is the acquisition
    context.
    """
    if not url:
        return url

    portal_state = context.restrictedTraverse("@@plone_portal_state")

    if "${navigation_root_url}" in url:
        url = _replace_variable_by_path(
            url, "${navigation_root_url}", portal_state.navigation_root()
        )

    if "${portal_url}" in url:
        url = _replace_variable_by_path(url, "${portal_url}", portal_state.portal())

    return url

def _replace_variable_by_path(url, variable, obj):
    path = "/".join(obj.getPhysicalPath())
    return url.replace(variable, path)