Nodejs：如何导出多个对象？ [英] Nodejs: How to export multiple objects?

问题描述

我是Node.js的新手。如何导出多个对象？例如

I'm new to Nodejs. How to export multiple objects? For example

fs = require("fs")
Sequelize = require 'sequelize'

module.exports = (config)->
  sequelize = new Sequelize(
    config.database.name
    config.database.username
    config.database.password
    config.database.options
  )

  fs.readdirSync(config.root+'/server/models/').forEach (file)->
    module.exports['Page'] = sequelize.import(config.root + '/server/models/' + file) # --> export this model 
  sequelize # --> export this object

我要使用页模型类似：

Page = require('./models').Page

我想使用 Sequelize 对象：

Sequelize = require('./models').Sequelize

b $ b

感谢您的建议：D

Thank you for advice :D

UPDATED ：
解决方法如下：

UPDATED: Solved following way:

fs = require("fs")
Sequelize = require 'sequelize'

module.exports = (config)->
  @Sequelize = new Sequelize(
    config.database.name
    config.database.username
    config.database.password
    config.database.options
  )

  fs.readdirSync(config.root+'/server/models/').forEach (file)->
    @Page = sequelize.import(config.root + '/server/models/' + file)
  @

但是我有另一个问题。如何动态分配模型？

but I have an another problem. How to assign models dynamically?

UPDATED
解决第二个问题如下：

UPDATED Solved second problem following way:

fs = require("fs")
Sequelize = require 'sequelize'

module.exports = (config)->
  @Sequelize = new Sequelize(
    config.database.name
    config.database.username
    config.database.password
    config.database.options
  )

  # @Page = sequelize.import(config.root + '/server/models/page')
  fs.readdirSync(config.root+'/server/models/').forEach (file)->
    str = file.replace('.coffee', '')
    model = str.charAt(0).toUpperCase() + str.slice(1)
    @[model] = @Sequelize.import(config.root + '/server/models/' + file) if ~file.indexOf('.coffee')
  @

推荐答案

只需将它们包装在对象字面量中。在纯JS（没有CoffeeScript）中：

Just wrap them in an object literal. In pure JS (without CoffeeScript) that would be:

module.exports = {
    Page: {}, // or whatever you want to assign it to
    Serialize: {} // again, set it to what you like
};

在coffeescript中使用缩进，除非你想创建一个空对象：

In coffeescript you use indents, except when you want to make an empty object:

module.exports =
  Page: {},
  Serialize: {}

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