猫鼬.populate() [英] Mongoose .populate()

问题描述

我是初学者.

我有两个猫鼬模式，即订单和客户.

I have two mongoose schema, orders and customers.

订单模式

const mongoose = require("mongoose");

const orderSchema = new mongoose.Schema({
    customer: {type: mongoose.Schema.Types.ObjectId, ref: "Customer"}    
});

module.exports = mongoose.model("Order", orderSchema);

客户架构

const mongoose        = require("mongoose"),
passportLocalMongoose = require("passport-local-mongoose");

const customerSchema = new mongoose.Schema({
    name: String,
    email: String
    username: String,
    password: String
});

customerSchema.plugin(passportLocalMongoose);
module.exports = mongoose.model("Customer", customerSchema);

这是我插入新订单时的代码

This is my code when I insert new order

const Orders = require("../models/orders");

Orders.create({customer: req.user});

我想使用.populate()来console.log()所有订单和客户

I want to console.log() all the orders and customers by using .populate()

这是我的代码

Orders.find({}).populate("customers").exec((err, order) => {
    if(err) {
        console.log(err);
    } else {
        console.log(order);
    }
});

我想获取客户的ID，姓名和电子邮件，但问题是我只获取客户的ID

I want to get the customer's id, name, and email but the problem is I only get the customer's id

推荐答案

Orders.find({}).populate("customer").exec((err, order) => {
if(err) {
    console.log(err);
} else {
    console.log(order);
}
})

or you can try

    Orders.find({}).populate({path:"customer"}).exec((err, order) => {
if(err) {
    console.log(err);
} else {
    console.log(order);
}

})

这篇关于猫鼬.populate()的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！