yii2 custom validator multiple attributes

public function rules()
    {
 [['is_property_owner', 'is_property_renant'], 'validateproperty'],

 }

    public  function validateproperty($attribute, $params){

        if(empty($this->is_property_owner) && empty($this->is_property_renant)){
            $this->addError('is_property_renant', 'Please select at least one option.');
        }


    }