如何根据动态值选择列表

Question

我是淘汰赛的新手。我希望当我根据值单击编辑按钮时，应选择下拉菜单。

这是我的完整代码...我正在尝试编辑记录...

这是我的 HTML 代码

这是我的 JS 代码...

功能项(id, name) { this.id = ko.observable(id);

    this.name1 = ko.observable(name);

}

函数 CompanyViewModel() {

var self = this; var 排序 = "desc";

    self.id = ko.observable("");
    self.name = ko.observable().extend

({ 要求：真 }); self.bloombergcode = ko.observable().extend({ required: true });

    self.Id = ko.observable();

    self.sector1 = [new item(1, "Banking"), new item(2, "Non-Banking")];

    self.country = ko.observableArray([]);

    self.sectorid = ko.observable().extend({ required: true });

    self.isincode = ko.observable();
enter code here
    self.address = ko.observable();

    this.validationModel = ko.validatedObservable({
        name: self.name,
        bloombergcode: self.bloombergcode,
        sectorid: self.sectorid

    });



    //        self.items = ko.observableArray([]);
    var company =
{
    id: self.id,
    name: self.name,
    bloombergcode: self.bloombergcode,
    sectorid: self.sectorid,
    isincode: self.isincode,
    sector1: self.sector1,
    address: self.address
};

    self.company = ko.observable();
    self.companies = ko.observableArray();


    $.ajax({
        url: '@Url.Action("CompanyId", "Company")',
        cache: false,
        type: 'GET',
        contentType: 'application/json; charset=utf-8',
        data: {},
        success: function (data) {

            //self.companies(data);
            self.company(data); 

            self.id(data.id);

            self.name(data.name);

            self.sectorid = ko.observable(new item(data.sectorid, ""));

            self.isincode(data.isincode);

            self.address(data.address);

            self.sectorid(self.sector1[1].id);

           // self.sectorid(self.sector1[1]);


            self.bloombergcode(data.bloombergcode)
        }
    });

}

var viewModel=new CompanyViewModel(); ko.applyBindings(viewModel);

Answer 1

由于您提供了optionsValue 参数，您需要将sectored 设置为id 值。换句话说：

self.sectorid(self.sector[1].id());

另外，您的绑定声明不正确。您在 optionsValue 参数上缺少 id 周围的引号。如：

<select id="sector" data-bind="options:sector1 , validationElement: sectorid, valueUpdate: 'afterkeydown', optionsValue:'id', optionsCaption: '........Select........', value: $root.sectorid, optionsText: 'name1' "></select>        

希望有帮助！

附：为了澄清，不提供optionsValue，敲除将使用实际对象作为值。在这种情况下，您最初的代码 self.sectorid(self.sector[1]) 会按预期工作。