Load Data From API to Combo

API di Yii :
=============
public function actionView()
{
    $sql = "SELECT * from tbl_data";
    $connection=Yii::app()->db;
    $command=$connection->createCommand($sql);
    $dataReader=$command->queryAll();
    echo CJSON::encode($dataReader);
}

======================================================

Di jQuery :
============
    $.ajax({
        type: 'GET',
        url: '<?php echo Yii::app()->createAbsoluteUrl("api/view"); ?>',
        dataType: 'json',
        cache: false,
        success: function (result) {
            $.each(result, function() {
                $("#idCombonya").append($('<option>', {
                    value: this.strkey,
                    text : this.strvalue
                }));
            });
        },
        error: function(jqXHR, exception){
            if (jqXHR.status === 0) {
                alert('Not connect.\n Verify Network.');
            } else if (jqXHR.status == 404) {
                alert('Requested page not found. [404]');
            } else if (jqXHR.status == 500) {
                alert('Internal Server Error [500]');
            } else if (exception === 'parsererror') {
                alert('Requested JSON parse failed.')
            } else if (exception === 'timeout') {
                alert('Time out error.')
            } else if (exception === 'abort') {
                alert('Ajax request aborted.')
            } else {
                alert('Uncaught Error.\n' + jqXHR.responseText);
            }
        }
    });