Knockout.js 使用击倒剑道组合框选择的选项

我在创造。我期望的是选择所选对象作为chosenticketcontainobject，而不是specsifict to属性。这是我使用asp.net razor的代码。 C代码：

我期望的是，当用户在ComboBox BankAccount中选择项时，chosenBankAccount应该包含一个来自“BankAccountSetupViewModel”的对象，该对象是由C代码生成的，使用敲除映射插件进行映射。

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欢迎使用任何方法。

剑道组合框不支持选择整个对象。您可以指定dataValueField以将值设置为对象的唯一键id。然后，可以创建一个ko.computed来表示选定对象。比如：

this.choices = ko.observableArray([
    { id: "1", name: "apple"},
    { id: "2", name: "orange"},
    { id: "3", name: "banana"}
]);

this.selectedId = ko.observable();
this.selectedChoice = ko.computed(function() {
    var id = this.selectedId();
    if (id) {
        return ko.utils.arrayFirst(this.choices(), function(choice) {
           return choice.id === id; 
        });
    }  
}, this);

此处示例：

<fieldset id="form-container" data-bind="with: formEditorSettlement">
    <legend>Edit Detail</legend>
    @Html.LabelFor(model => model.Amount)
    <span style="margin-bottom: 20px;">
        @Html.TextBoxFor(model => model.Currency.Code, new { @readonly = true, data_bind = "value: currency", @style = "width: 50px;" })
        @Html.TextBoxFor(model => model.Amount, new { data_bind = "value: amount" })
    </span>
    <div class="cols-2">
        <label class="cols-full">Bank Account</label><br />
        <label>Bank</label>
        <span>@(Html.Kendo().ComboBox().Name("BankAccount").Suggest(true).Filter(FilterType.Contains).DataTextField("Name").DataValueField("ID").BindTo(accountExample).HtmlAttributes(new { @class = "no-input", style = "width: 300px;", data_bind = "kendoComboBox: { data: $root.accounts, value: $root.chosenBankAccount, dataTextField: 'Bank', dataValueField: 'ID' }" }))</span>
        <label>Account No.</label>
        <span>@Html.TextBoxFor(model => model.BankAccount, new { @readonly = true, data_bind = "value: $root.chosenBankAccount.AccountName" })</span>
        <label>Account Name</label>
        <span>@Html.TextBox("BankAccountName", null, new { @readonly = true, data_bind = "value: bankAccountName" })</span>
    </div>
</fieldset>

(function ($, ko, undefined) {
    var viewModel = namespace('ViewModels.Activities');
    viewModel.SettlementSplitObservable = new (function (defaultSettlementSplit, defaultAccounts) {
        var root = this;
        //add isChecked to all item
        ko.utils.arrayForEach(defaultSettlementSplit, function (item) {
            item.isChecked = ko.observable(false);
        });
        root.verifiedItems = ko.observableArray(defaultSettlementSplit);
        root.lastAction = ko.observable('add');
        root.maxAmount = ko.observable(@(Model.Splitted[0].Amount));
        root.accounts = ko.mapping.fromJS(defaultAccounts);
        root.chosenBankAccount = ko.observable();
        root.formEditorSettlement = new (function () {
            var self = this;
            self.currency = ko.observable('@Model.Currency.Code');
            self.amount = ko.observable(0);
            self.bankNameBank = ko.observable('');
            self.bankAccountNo = ko.observable('');
            self.bankAccountName = ko.observable('');
            self.isEditMode = ko.observable(false);
        }.bind(this));
    })(@Html.Raw(Json.Encode(Model.Splitted)),
       @Html.Raw(Json.Encode(accountExample)));
})(jQuery, ko)

this.choices = ko.observableArray([
    { id: "1", name: "apple"},
    { id: "2", name: "orange"},
    { id: "3", name: "banana"}
]);

this.selectedId = ko.observable();
this.selectedChoice = ko.computed(function() {
    var id = this.selectedId();
    if (id) {
        return ko.utils.arrayFirst(this.choices(), function(choice) {
           return choice.id === id; 
        });
    }  
}, this);