尝试创建 Backbone.js 视图子类时出错
我有下面的backbone.js视图：
class MyApplication.Views.Cake extends Backbone.View
tagName: 'li'
className: 'cake'
和尝试的子类
class MyApplication.Views.AwesomeCake extends MyApplication.Views.Cake
但是在javascript控制台中，子类上抛出以下错误：
Uncaught TypeError: Cannot read property 'prototype' of undefined
I have the backbone.js view below:
class MyApplication.Views.Cake extends Backbone.View
tagName: 'li'
className: 'cake'
and the attempted subclass
class MyApplication.Views.AwesomeCake extends MyApplication.Views.Cake
However in the javascript console the following error is thrown on the subclass:
Uncaught TypeError: Cannot read property 'prototype' of undefined
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我发现我的问题是 Rails 3.1 和资产管道的问题。由于 sprockets 按字母顺序加载 javascript 文件（并且因为 Awesome_cake 出现在 cake 之前），所以我需要需要超类文件。
问题中找到的解决方案：
Backbone.js - Coffeescript 扩展
I found out that my issue was a problem with Rails 3.1 and the asset pipeline. Since sprockets loads the javascript files in alphabetical order (and because awesome_cake comes before cake) I needed to require the superclasses file.
Solution found in question:
Backbone.js - Coffeescript extends