PreviousOperation::rules PHP Метод

    public function rules()
    {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(array('operation, patient_id', 'required'), array('date, side_id, operation, patient_id', 'safe'), array('date', 'OEFuzzyDateValidatorNotFuture'), array('id, date, operation, patient_id', 'safe', 'on' => 'search'));
    }