绑定选项和optionsknockout.js中的Select下拉列表中的文本

Question

我在这里和其他网站上阅读了所有内容，但不了解我的问题。 看起来应该可以，但是不能。 我将[Object object]作为选项。

HTML

 <select data-bind="options: Cities, optionsText: Cities.CityNameRu"></select>

昏死

function CityModel(data) {
    this.CityId = ko.observable(data.CityId);
    this.CityNameRu = ko.observable(data.CityNameRu);
    this.CityName = ko.observable(data.CityName);
}

function IndexModel() {
    var self = this;
    self.Cities = ko.observableArray([]);

    self.GetCities = function () {
        $.ajax({
            type: "GET",
            url: '/FetchCities',
            dataType: "json",
            success: function (data) {
                self.SuccessfullyRetrievedModelsFromAjax(data);   
            },
            error: function (err) {
                alert(err.status + " : " + err.statusText);
            }
        });
    };

    this.SuccessfullyRetrievedModelsFromAjax = function (models) {
        ko.utils.arrayForEach(models, function (model) {
            self.Cities.push(new CityModel(model));
        });
    };
    self.GetCities();
}

杰森回应

[{"CityId":1,"CityName":"philadelphia","CityNameRu":"Филадельфия"},{"CityId":2,"CityName":"new-york","CityNameRu":"Нью Йорк"}

Answer 1

optionsText的值是每个用于文本的options数组元素内的属性的字符串名称，因此您应将绑定更改为：

<select data-bind="options: Cities, optionsText: 'CityNameRu'"></select>