'This route/function is called by Google when user Accept/Refuse the consent of Google'

@http.route('/google_account/authentication', type='http', auth='none')
def oauth2callback(self, **kw):

    state = json.loads(kw['state'])
    dbname = state.get('d')
    service = state.get('s')
    url_return = state.get('f')
    with registry(dbname).cursor() as cr:
        if kw.get('code'):
            request.env(cr, request.session.uid)[('google.%s' % service)].set_all_tokens(kw['code'])
            return redirect(url_return)
        elif kw.get('error'):
            return redirect(('%s%s%s' % (url_return, '?error=', kw['error'])))
        else:
            return redirect(('%s%s' % (url_return, '?error=Unknown_error')))
