'Returns the canonical URL for this workflow.
This is used for the POST action attribute on the form element
wrapping the workflow.
For convenience it defaults to the value of
``request.get_full_path()`` with any query string stripped off,
e.g. the path at which the workflow was requested.'

def get_absolute_url(self):

    return self.request.get_full_path().partition('?')[0]
