Question

我正在尝试使用快速应用程序在mongoose中创建模型。我得到的错误如下：

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

我的设置如下：

我有一个模块名称Schemas，我使用npm link
Schemas模块有一个入口点index.js，其中包含以下内容
```
module.exports = require('./lib/index');
```

上面要求的索引文件（./ lib / index.js）有：

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

上述学院档案（./ Schemas / Institute）具有以下内容：

var mongoose = require('mongoose');
var Schema = mongoose.Schema;

var RegistrySchema = new Schema({
name: String,
privileges: [String]
});

module.exports = RegistrySchema;

以下是我的快递应用程序的摘录：

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);

然而，当我运行Express时，我得到以下堆栈跟踪：

   /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

我建议你有一个模型目录，你可以在其中为每个模型定义一个文件。在模型文件中导出模型本身。

在models / Registry.js中 -

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

在app.js中，只需要所有模型文件 -

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

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

看一下MEAN堆栈的锅炉结构 - https://github.com/linnovate/mean/tree/master/app

另请查看本文以了解需要如何工作 - http://openmymind.net/2012/2/3/Node-Require-and-Exports/

Mongoose ODM模型创建问题

1 个答案: