518             if tr is None:

   518             if tr is None:

   519                 msg = session._("transition doesn't belong to entity's workflow")

   519                 msg = session._("transition doesn't belong to entity's workflow")

   520                 raise ValidationError(entity.eid, {'by_transition': msg})

   520                 raise ValidationError(entity.eid, {'by_transition': msg})

   521             if not tr.has_input_state(fromstate):

   521             if not tr.has_input_state(fromstate):

   522                 msg = session._("transition isn't allowed")

   522                 msg = session._("transition isn't allowed")

   523                 raise ValidationError(entity.eid, {'by_transition': msg})

   524                 raise ValidationError(entity.eid, {'by_transition': msg})

   524             if not tr.may_be_fired(foreid):

   525             if not tr.may_be_fired(foreid):

   525                 msg = session._("transition may not be fired")

   526                 msg = session._("transition may not be fired")

   526                 raise ValidationError(entity.eid, {'by_transition': msg})

   527                 raise ValidationError(entity.eid, {'by_transition': msg})

   527         if entity.get('to_state'):

   528         if entity.get('to_state'):