猫鼬必填字段嵌套架构

Question

我试图在嵌套架构上使用猫鼬4.4.6做一个必填字段，但我从来没有得到一个验证错误..这里是我最小的非工作代码：
models/Test。 JS：

var mongoose = require('mongoose'); 

var TestChildSchema = mongoose.Schema({ 
    _id: false, 
    testRequiredField: {type: String, required: true} 
}); 

var TestParentSchema = mongoose.Schema({ 
    testField: TestChildSchema 
}); 

module.exports = mongoose.model('Test', TestParentSchema); 

我用它是这样的：
page.js

var mongoose = require('mongoose'); 
var Test = mongoose.model('Test'); 

exports.index = function (req, res) { 
    var test = new Test(); 
    test.save(function (err, test) { 
    var strOutput; 
    res.writeHead(200, { 
     'Content-Type': 'text/plain' 
    }); 
    if (err) { 
     console.log(err); 
     strOutput = 'Oh dear, we\'ve got an error'; 
    } else { 
     console.log('test created: ' + test); 
     strOutput = 'Success'; 
    } 
    res.write(strOutput); 
    res.end(); 
    }); 

和我的个app.js：

var http = require('http'); 
var mongoose = require('mongoose'); 
var dbURI = 'mongodb://localhost:27017/ConnectionTest'; 
mongoose.connect(dbURI); 
require('./models/Test'); 
var pages = require('./pages'); 

http.createServer(function (req, res) { 
    pages.index(req, res); 
}).listen(8888, '127.0.0.1'); 

为什么这个代码不会产生对嵌套必填字段验证错误？是否有另一种方法来产生验证错误？我错过了什么吗？

Answer 1

因为testRequiredField是var test = new Test();