Node.js：模块无法识别架构 [英] Node.js: Module does not recognize Schema

问题描述

在 server.coffee 上，我有：

User = mongoose.model 'User', s.UserSchema

addEntryToCustomer = require './lib/addEntryToCustomer'

和 addEntryToCustomer.coffee 我有：

module.exports = (phone,res,req) -> 
    User.find {account_id: phone.account_id }, (err, user) ->

我收到此错误：

2011-11-14T19:51:44+00:00 app[web.1]: ReferenceError: User is not defined

推荐答案

在node.js中，模块在各自的上下文中运行。这意味着 User 变量在 addEntryToCustomer.coffee 中不存在。

In node.js, modules run in their own context. That means the User variable doesn't exist in addEntryToCustomer.coffee.

您可以使 User 成为全局用户（对此要小心）：

You can either make User global (careful with it):

global.User = mongoose.model 'User'

将用户变量传递给模块：

Pass the user variable to the module:

module.exports = (User, phone, res, req) -> 
  User.find {account_id: phone.account_id }, (err, user) -> …

或重新加载模型：

mongoose = require 'mongoose'

module.exports = (phone,res,req) -> 
  User = mongoose.model 'User'
  User.find {account_id: phone.account_id }, (err, user) ->

也可以向模型本身添加方法，尽管在定义模式时需要这样做： http://mongoosejs.com/docs/methods-statics.html

It's also possible to add methods to the Models themselves, though you need to do that when defining the Schema: http://mongoosejs.com/docs/methods-statics.html

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