貓鼬ODM模型創建問題

Question

我正在嘗試使用快速應用程序在貓鼬中創建模型。 我得到的錯誤是：

Did you try nesting Schemas? You can only nest using refs or arrays. 

我的設置如下：

1. 我有我使用NPM鏈接鏈接到我的快遞應用程序的模塊名稱架構

2. Schemas模塊有一個入口點index.js，它具有以下內容

   module.exports = require('./lib/index'); 
   

3. 上述所需的索引文件（./ LIB/index.js）具有：

   module.exports = { InstituteSchema: require('./Schemas/Institute') } 
   

4. 上述研究所文件（./架構/研究所）具有以下：

   var mongoose = require('mongoose'); 
   var Schema = mongoose.Schema; 
   
   var RegistrySchema = new Schema({ 
   name: String, 
   privileges: [String] 
   }); 
   
   module.exports = RegistrySchema; 
   

5. 下面是一個我明確的應用程序的提取物：

   var express = require('express'); 
   var mongoose = require('mongoose'); 
   mongoose.connect('mongodb://localhost/Project'); 
   var http = require('http'); 
   var path = require('path'); 
   var routes = require('./routes'); 
   var RegistrySchema = require('Schemas').RegistrySchema; 
   var RegistryModel = mongoose.model('Registry', RegistrySchema); 
   

但是當我跑快我碰到下面的堆棧跟蹤：

/usr/local/bin/node app.js 

    /Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:362 throw new TypeError('Undefined type at `' + path + 

    TypeError: Undefined type at `paths.name` 
    Did you try nesting Schemas? You can only nest using refs or arrays. 
at Function.Schema.interpretAsType (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:362:11) 
at Schema.path (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:305:29) 
at Schema.add (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:217:12) 
at Schema.add (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:212:14) 
at new Schema (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/schema.js:73:10) 
at Mongoose.model (/Users/user/Documents/WebstormProjects/Project/node_modules/mongoose/lib/index.js:293:14) 
at Object.<anonymous> (/Users/user/Documents/WebstormProjects/Project/app.js:12:30) 
at Module._compile (module.js:456:26) 
at Object.Module._extensions..js (module.js:474:10) 
at Module.load (module.js:356:32) 

Process finished with exit code 8 

Answer 1

我建議你有一個模型目錄，在其中有一個爲每個模型定義的文件。在模型文件中導出模型本身。

在模型/ Registry.js -

module.exports = mongoose.model('Registry', RegistrySchema); 

而在你的app.js，只是要求所有的模型文件 -

var fs = require('fs'), 
    modelPath = __dirname + '/models'; 

fs.readdirSync(modelPath).forEach(function(file) { 
    require(modelPath + '/' + file); 
}); 

看一看平均堆boilerplace結構 - https://github.com/linnovate/mean/tree/master/app

也看看這篇文章，瞭解如何工作 - http://openmymind.net/2012/2/3/Node-Require-and-Exports/