my rules

    public function rules() {
        // NOTE: you should only define rules for those attributes that
        // will receive user inputs.
        return array(
            array('tnum, contract_id, project_id, worker_id, ivedimas, pert_atost, date', 'required'),
            array('contract_id, project_id, worker_id, extra, extra1, user_id, metai', 'numerical', 'integerOnly' => true),
            array('tnum, pert_atost', 'length', 'max' => 255),
            array('menesiai, ivedimas', 'length', 'max'=>2),
            array('pert_atost, ivedimas', 'allowEmpty'=>true),
            array('updatets', 'safe'),
            // The following rule is used by search().
            // @todo Please remove those attributes that should not be searched.
            array('id, tnum, contract_id, project_id, worker_id, ivedimas, pert_atost, extra, extra1, date, user_id, updatets, createts', 'safe', 'on' => 'search'),
        );
    }