[英]Node coffeescript class files and inheritance
I have 2 class files: 我有2个类文件:
foo.coffee: class Foo
foo.coffee:
class Foo
bar.coffee: class Bar extends Foo
bar.coffee:class
class Bar extends Foo
How do I define these classes so they are globally available? 如何定义这些类以使它们全局可用? I get the error in
Bar
that Foo
is not defined. 我在
Bar
中得到错误,没有定义Foo
。
I have an index.js file that I call node
on to run the scripts. 我有一个index.js文件,我调用
node
来运行脚本。 Here is the contents of index.js, I most likely did this wrong also: 这是index.js的内容,我也很可能也错了:
exports.Foo = require("./foo")
exports.Bar = require("/bar")
foo.coffee: foo.coffee:
class Foo
// ...
module.exports = Foo
bar.coffee: bar.coffee:
Foo = require "./foo"
class Bar extends Foo
// ...
module.exports = Bar
index.coffee: index.coffee:
exports.Foo = require "./foo"
exports.Bar = require "./bar"
UPDATE: You also need to run .coffee
files with coffee
, unless you compile them first. 更新:你还需要用
coffee
运行.coffee
文件,除非你先编译它们。
UPDATE 2: How you structure your models is up to you. 更新2:您的模型结构取决于您。 I like the pattern above (where simple modules export just a function -- that's when you need to assign to
module.exports
because you can't simply assign to exports
) but others prefer a structure like this: 我喜欢上面的模式(简单的模块只导出一个函数 - 当你需要分配给
module.exports
因为你不能简单地分配给exports
)但是其他人更喜欢这样的结构:
foo.coffee: foo.coffee:
class Foo
// ...
exports.Foo = Foo
bar.coffee: bar.coffee:
Foo = require("./foo").Foo
class Bar extends Foo
// ...
exports.Bar = Bar
index.coffee: index.coffee:
exports.Foo = require("./foo").Foo
exports.Bar = require("./bar").Bar
Where each module exports an object with one or more properties. 每个模块导出具有一个或多个属性的对象。
You can also write: 你也可以写:
class @MyClass
[...]
{MyClassName} = require './myclassFile'
myClass = new MyClassName
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