Stuff

public function _validation_unique($val) {     \Validation::active()->set_message('unique', ':label must be unique. This value has already been used');     $q = static::find()->where(\Validation::active_field()->name, 'like', $val);     foreach (static::primary_key() as $pk) {           $q->where($pk ,'!=', $this->{$pk});     }     return !$q->count();}