Javascript 如何获取嵌套视图模型的实例-敲除
视图有一个标题,后面是带有子菜单的部分。viewmodels的设计如下所示:Javascript 如何获取嵌套视图模型的实例-敲除,javascript,knockout.js,Javascript,Knockout.js,视图有一个标题,后面是带有子菜单的部分。viewmodels的设计如下所示: SettingsViewModel = function (pName) { var self = this; self.productName = ko.observable(pName), //heading self.sections = ko.observableArray([ { checkboxID: ko.observable(), checkboxIDSt
SettingsViewModel = function (pName) {
var self = this;
self.productName = ko.observable(pName), //heading
self.sections = ko.observableArray([
{ checkboxID: ko.observable(), checkboxIDState: ko.observable(), sectionname: ko.observable(), sectionState: ko.observable() }
]), //submenus
self.Addsections = function (checkboxid, sIdState, sName, sState) {
this.sections.push({ checkboxID: checkboxid, checkboxIDState: sIdState, sectionname: sName, sectionState: sState });
}
};
function MainViewModel() {
var self = this;
self.products = ko.observableArray([]);
self.AddProducts= function (pname) {
self.products.push(new SettingsViewModel(pname));
}
};
$(document).ready(function () {
VM = new MainViewModel();
ko.applyBindings(VM, document.getElementById("divd"));
data= []; //some dummy data
CallMEnus(data);
});
function CallMEnus(data) {
var str = "";
$(data).each(function (index, products) {
VM.AddProducts(products.name);
$(products.section).each(function (index, section) {
var ChkboxId = "data";
var chkboxIdState = 'datt';
var chkboxIdState += " checked";
}
//how to call the products add section method?
VM.products()[index].Addsections(ChkboxId, chkboxIdState, section.name, section.state);
});
});
我需要从MainViewModel实例调用嵌套SettingsViewModel的AddSections方法。如何做到这一点
提前感谢。我会使用EventAggregator来解耦viewmodels,我已经编写了这个轻量级EventAggregator 订阅:
MyApp.eventAggregator.subscribe(MyApp.DeleteCustomerMessage, this.customerDeleted, this);
出版:
MyApp.eventAggregator.publish(new MyApp.DeleteCustomerMessage(this));
您的问题是,sections循环中的参数
index
隐藏products循环中的index
。只需使用另一个参数名称:
function CallMEnus(data) {
var str = "";
$(data).each(function (index, products) {
VM.AddProducts(products.name);
$(products.section).each(function(i, section) { // here
var id = "data";
var state = "checked";
VM.products()[index].Addsections(id, state, section.name, section.state);
});
});
};
“我会使用EventAggregator来解耦viewmodels”是一个完美的评论,但不是答案。请扩展您的答案,包括OP应该如何以及为什么在这里使用EventAggregator,而不仅仅是复制您为其他内容编写的一些示例代码。