从另一个模型更新一个模型

Question

我有两个相同类型的模型，型号A和模型B。我想更新型号A，其型号为B。这两种模式都绑定到用​​户界面的不同区域。

有没有办法做到更新而不必去财产的财产？

// address = model A 
// this.editingBillingAddress() = model B 

var address = ko.utils.arrayFirst(this.userAddresses(), function (address) { 
    return address.addressId() == 123; 
}); 

//address = this.editingBillingAddress(); // this does nothing. nothing in the UI updates 

// this works but I must explicitly set every property 
address.name(this.editingBillingAddress().name()); 
address.address1(this.editingBillingAddress().address1()); 
address.address2(this.editingBillingAddress().address2()); 
// .... and so on until the fingers bleed 

Answer 1

找到了答案在此第二评论问题：Updating Knockout.js Observable array element value。

var address = ko.utils.arrayFirst(this.userAddresses(), function (address) { 
    return address.addressId() == 123; 
}); 

this.userAddresses.replace(address, this.editingBillingAddress()); 

Answer 2

您可以使用映射插件先转换为JavaScript对象，然后映射到一个对象，具有可观：http://knockoutjs.com/documentation/plugins-mapping.html

var jsAddress = ko.mapping.toJS(self.address()); 
var address = ko.mapping.fromJS(jsAddress); 
self.editingBillingAddress(address); 

http://jsfiddle.net/Wk7dr/6/