javascript - Knockout 和 coffeescript - uncouched 类型错误

Question

我想使用 knockout 和 CoffeeScript 维护简单的应用程序。我想添加 Json 对象数组，例如:

[
    {
        Name = "",
        Subscribe = "",
        ScrollOfDish = [0]
    },
    {
        Name = "",
        Subscribe = "",
        ScrollOfDish = [0]
    }
]

这是我的代码:

class Complex
        constructor: ()->
            @ComplexItems = ko.observableArray()
            @getAllComplex()
        self = this

        getAllComplex:()->
            $.ajax
                type: "POST"
                url: "/Complex/GetAllComplex"
                data: {}
                dataType:"json"
                contentType:"json"
                success:(res)->
                        self.ComplexItems res // here is the problem


    $(document).ready ()->
        window.model = new Complex()
        ko.applyBindings(model)

但我遇到了未修饰类型错误 ComplexItems is not a function 的问题。当然，我尝试反向 self.ComplexItems 和 model.ComplexItems - 它不起作用 - 但我想了解为什么我的示例不起作用。

Answer 1

你的 self = this 是在错误的地方.. 现在它使“self”指向构造函数(而不是类的任何实例..)。应该是:

class Complex
    constructor: ()->
        @ComplexItems = ko.observableArray()
        @getAllComplex()        

    getAllComplex:()->
        self = this    
        $.ajax
            type: "POST"
            url: "/Complex/GetAllComplex"
            data: {}
            dataType:"json"
            contentType:"json"
            success:(res)->
                    self.ComplexItems res


$(document).ready ()->
    window.model = new Complex()
    ko.applyBindings(model)