在meteor 0.6.4.1 / coffeescript中，变量的可见性如何工作？ [英] In meteor 0.6.4.1/coffeescript, how does variable visibility work?

问题描述

我是新来的流星和咖啡。我使用非官方流星FAQ中建议的文件布局。在文件集/ C.coffee中，我有

I'm new to meteor and coffeescript. I'm using the file layout suggested in the Unofficial Meteor FAQ. In file collections/C.coffee, I have

C = new Meteor.Collection 'C'
console.log "C: #{C}"

在文件服务器/ main.coffee中， >

In file server/main.coffee, I have

C.insert {test: 'test'}

b
$ b

当我开始meteor时，我在控制台上看到：

When I start meteor, I see on the console:

C: [object Object]
ReferenceError: C is not defined
    at app/server/main.coffee.js:5:1
    at /home/xxx/yyy/.meteor/local/build/server/server.js:298:12

如何使C在集合/ C之外的文件中可用。咖啡？

How do I make C available in files outside of collections/C.coffee?

更新：将@添加到C可解决顶级问题。但是它仍然失败：

Update: Adding @ to C fixes the problem at the top level. However it still fails with:

   Meteor.methods
        test: (statement) ->
             @C.insert {test: 'test'}

code> TypeError：无法调用未定义的方法insert

It fails with an error TypeError: Cannot call method 'insert' of undefined

推荐答案

可见的外部文件，它被定义在使用 @ ，它编译为 this。或 。在js中，它给出了与全局范围相同的效果：

To make C visible outside the file it was defined in use @, which compiles to this. or window. in js, which gives it the same effect as a global scope:

@C = new Meteor.Collection 'C'

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