'Open the website page with the survey form'

@api.multi
def action_start_survey(self):

    self.ensure_one()
    token = self.env.context.get('survey_token')
    trail = (('/%s' % token) if token else '')
    return {'type': 'ir.actions.act_url', 'name': 'Start    Survey', 'target': 'self', 'url': (self.with_context(relative_url=True).public_url + trail)}
