608 

   609 class UndoController(SendMailController):

   610     __regid__ = 'undo'

   611     __select__ = authenticated_user() & match_form_params('txuuid')

   612 

   613     def publish(self, rset=None):

   614         txuuid = self._cw.form['txuuid']

   615         errors = self._cw.cnx.undo_transaction(txuuid)

   616         if errors:

   617             self.w(self._cw._('some errors occured:'))

   618             self.wview('pyvalist', pyvalue=errors)

   619         else:

   620             self.redirect()

   621 

   622     def redirect(self):

   623         req = self._cw

   624         breadcrumbs = req.get_session_data('breadcrumbs', None)

   625         if breadcrumbs is not None and len(breadcrumbs) > 1:

   626             url = req.rebuild_url(breadcrumbs[-2],

   627                                   __message=req._('transaction undoed'))

   628         else:

   629             url = req.build_url(__message=req._('transaction undoed'))

   630         raise Redirect(url)

   631