在另一个模型中需要不同文件中的mongoose模型模式

我正在试图在模型中要求我的模型。 我相信我的要求的path是正确的，因为在我的要求没有错误，但似乎不会触发我的模型，每当我保存一个新的实例。 我在这里错过了什么？

role.js

module.exports = function () { var mongoose = require('mongoose'), Schema = mongoose.Schema; var role = new Schema({ type: String, level: Number, }); role.pre("save",function(next) { this.type = 'member'; this.level = 0; next(); }); return mongoose.model('Role', role); } 

user.js的

 module.exports = function (connection) { var mongoose = require('mongoose'); Role = require('./role.js'), Schema = mongoose.Schema; var user = new mongoose.Schema({ first_name: String, last_name: String, email: String, password: String, profile_image: String, company_name: String, type: [{ type : String, default: 'Local' }], created_at: { type : Date, default: Date.now }, created_by: { type: Schema.Types.ObjectId, ref: 'User' }, role: [Role] }); return connection.model('User', user); } 

Answer 1

您可以从模型实例直接访问底层模式，如下所示：

 module.exports = function (connection) { var mongoose = require('mongoose'), Role = require('./role.js'), RoleSchema = mongoose.model('Role').schema, Schema = mongoose.Schema; var user = new mongoose.Schema({ first_name: String, last_name: String, email: String, password: String, profile_image: String, company_name: String, type: [{ type : String, default: 'Local' }], created_at: { type : Date, default: Date.now }, created_by: { type: Schema.Types.ObjectId, ref: 'User' }, role: [RoleSchema] }); return mongoose.model('User', user); }