没有数组且没有参考的嵌入式文档

Embedded document without array and without reference

我有以下数据模型:

用户 - 地址 (一个用户有一个地址)。

出于可重用性的原因,我想在两个单独的文件中定义地址和用户的架构。这两个 "entities" 的关系应该作为嵌入式文档实现(没有数组,因为用户只有一个地址)。

阅读 Embedded document without Array? and https://github.com/LearnBoost/mongoose/pull/585 使用 Mongoose 并不容易。根据 Whosebug-thread,它可以像这样完成:

addressPersistenceModel.js:

var address = {
    street: String,
    zipCode: String,
    ...
};

module.exports = address;

userPersistenceModel.js:

var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var addressDefinition = require('./addressPersistenceModel');

var Address = new Schema(addressDefinition);

var UserEntityModel = new Schema({
    firstname: String,
    lastname: String,
    ...
    address: Address
});
mongoose.model('User', UserEntityModel);

但是我仍然得到错误

TypeError: Undefined type at `address`
Did you try nesting Schemas? You can only nest using refs or arrays.

像那样定义你的实体

var UserEntityModel = new Schema({
    firstname: String,
    lastname: String,
    address: addressDefinition
});

您可以嵌入 "definition" 但不能嵌入已创建的架构。