javascript - ObservableArray の更新時に UI が更新されない

Question

ユーザーが UI (html テーブル tblAllCert) のリストから行をクリックすると、2 つ目の HTML テーブル (tblCertDetails) にデータを入力する必要がある別の監視可能な配列にデータを入力するために発生するクリック イベントがあります。クリック イベントが発生し、データが戻ってくるのを確認できます。Observable 配列にデータが表示されますが、ビューが更新されません。

コード内のシーケンスの概要は次のとおりです。

 1. user clicks on row from html table tblAllCert, which fires selectThing method.
 2. In viewmodel code, selectThing passes the row data from the row selected to the GetCertificateDetails(row) method.
 3. GetCertificateDetails(row) method calls getCertDetails(CertificateDetails, source) function on my data service (the data service gets data from a web api).  getCertDetails(CertificateDetails, source) function returns an observable array.
 4. once the data is returned to selectThing, CertificateDetails observable array is populated.  It does get data to this point. 

ステップ 5 で UI (具体的には tblCertDetails html テーブル) を更新する必要がありますが、UI は更新されません。

これが私の見解です-

                                    <table id="tblAllCert" border="0" class="table table-hover" width="100%">
                                    <tbody data-bind="foreach: allCertificates">
                                        <tr id="AllCertRow" style="cursor: pointer" data-bind="click: $parent.selectThing, css: { highlight: $parent.isSelected() == $data.lwCertID }">
                                            <td>
                                                <ul style="width: 100%">

                                                    <b><span data-bind="    text: clientName"></span>&nbsp;(<span data-bind="    text: clientNumber"></span>)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span data-bind="    text: borrowBaseCount"></span>&nbsp;Loan(s)&nbsp;</b>
                                                    <br />
                                                    Collateral Analyst:&nbsp;<span data-bind="    text: userName"></span>
                                                    <br />
                                                    Certificate:&nbsp;<span data-bind="text: lwCertID"></span>&nbsp;&nbsp;Request&nbsp;Date:&nbsp;<span data-bind="    text: moment(requestDate).format('DD/MMM/YYYY')"></span>
                                            </td>
                                        </tr>
                                    </tbody>
                                </table>


                                <table id="tblCertDetails" border="0" class="table table-hover" width="100%">
                                <tbody data-bind="foreach: CertificateDetails">
                                    <tr id="Tr1" style="cursor: pointer">
                                        <td>
                                            <ul style="width: 100%">
                                                <b>Loan:&nbsp;<span data-bind="    text: loanNum"></span>
                                        </td>
                                    </tr>
                                </tbody>

                            </table>

私のビューモデル-

 define(['services/logger', 'durandal/system', 'durandal/plugins/router', 'services/CertificateDataService'],
function (logger, system, router, CertificateDataService) {
    var allCertificates = ko.observableArray([]);
    var myCertificates = ko.observableArray([]);
    var isSelected = ko.observable();
    var serverSelectedOptionID = ko.observable();

    var CertificateDetails = ko.observableArray([]);

    var serverOptions = [
    { id: 1, name: 'Certificate', OptionText: 'lwCertID' },
    { id: 2, name: 'Client Name', OptionText: 'clientName' },
    { id: 3, name: 'Client Number', OptionText: 'clientNumber' },
    { id: 4, name: 'Request Date', OptionText: 'requestDate' },
    { id: 5, name: 'Collateral Analyst', OptionText: 'userName' }
    ];

    var activate = function () {
        // go get local data, if we have it
        return SelectAllCerts(), SelectMyCerts();
    };


    var vm = {
        activate: activate,
        allCertificates: allCertificates,
        myCertificates: myCertificates,
        CertificateDetails: CertificateDetails,
        title: 'Certificate Approvals',
        SelectMyCerts: SelectMyCerts,
        SelectAllCerts: SelectAllCerts,
        theOptionId: ko.observable(1),
        serverOptions: serverOptions,
        serverSelectedOptionID: serverSelectedOptionID,
        SortUpDownAllCerts: SortUpDownAllCerts,
        isSelected: isSelected,
        selectThing: function (row, event) {
            CertificateDetails = GetCertificateDetails(row);
            isSelected(row.lwCertID);
        }

    };



    serverSelectedOptionID.subscribe(function () {
        var sortCriteriaID = serverSelectedOptionID();
        allCertificates.sort(function (a, b) {
            var fieldname = serverOptions[sortCriteriaID - 1].OptionText;

            if (a[fieldname] == b[fieldname]) {
                return a[fieldname] > b[fieldname] ? 1 : a[fieldname] < b[fieldname] ? -1 : 0;
            }

            return a[fieldname] > b[fieldname] ? 1 : -1;

        });

    });

    return vm;



    function GetCertificateDetails(row) {
        var source = {
            'lwCertID': row.lwCertID,
            'certType': row.certType,
        }
        return CertificateDataService.getCertDetails(CertificateDetails, source);
    }

    function SortUpDownAllCerts() {
        allCertificates.sort();
    }


    function SelectAllCerts() {
        return CertificateDataService.getallCertificates(allCertificates);
    }

    function SelectMyCerts() {
        return CertificateDataService.getMyCertificates(myCertificates);
    }

});

そして、私のデータサービスからの関連する抜粋-

        var getCertDetails = function (certificateDetailsObservable, source) {
        var dataObservableArray = ko.observableArray([]);
        $.ajax({
            type: "POST",
            dataType: "json",
            url: "/api/caapproval/CertDtlsByID/",
            data: source,
            async: false,
            success: function (dataIn) {

                ko.mapping.fromJSON(dataIn, {}, dataObservableArray);

            },
            error: function (error) {
                jsonValue = jQuery.parseJSON(error.responseText);
                //jError('An error has occurred while saving the new part source: ' + jsonValue, { TimeShown: 3000 });
            }

        });
        return dataObservableArray;
    }

UI が更新されない理由のアイデアはありますか?