Knockout isDirty示例，使用映射插件中的动态viewmodule [英] Knockout isDirty example, using dynamic viewmodule from mapping plugin

问题描述

我正在使用 Ryan Niemeyer的肮脏旗帜. 在 jsFiddle 中可以看到他的方法的一个例子.

I'm using Ryan Niemeyer's Dirty Flag. An example of his method can be seen in this jsFiddle.

他在ViewModel上有一个dirtyItems方法

He has a dirtyItems method on the ViewModel

this.dirtyItems = ko.computed(function() {
  return ko.utils.arrayFilter(this.items(), function(item) {
    return item.dirtyFlag.isDirty();
  });
}, this);

但是，我似乎无法让他的dirtyItems方法处理我的数据.最大的不同是我正在使用映射插件. 我尝试过的一切都变空了.

However, I can't seem to get his dirtyItems method working with my data.The biggest difference is that I am using the mapping plugin. Everything I have tried comes back empty.

这是我的实现的 jsFiddle .

推荐答案

您可以将dirtyFlag添加到ProfilePropertyValue中，例如:

You could add the dirtyFlag to the ProfilePropertyValue like:

var mappingOptions = {
    ProfilePropertyValue: {
        create: function (mappingoptions) {
            var data = mappingoptions.data;
            data.ProfilePropertyValue = data.ProfilePropertyValue || {
                "ID": null,
                    "Checkbox": ko.observable(false)
            };

            var result = ko.mapping.fromJS(data);
            result.dirtyFlag = ko.dirtyFlag(result);

            return result;
        }
    }
};

然后，如果需要，则在构建脏物品列表时需要对其进行检查.

Then, you would need to check it when building your list of dirty items, if that is something that you need.

示例: http://jsfiddle.net/rniemeyer/7DGfs/

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