使用提交按钮/输入标签将数据插入猫鼬模式

Question

所以我一直在开发一种电子商务网站，用户可以在其中为他们喜欢的商店添加书签，然后将其保存到数据库中。

我有两种猫鼬模式，一种用于商店，另一种用于用户

//jshint esversion:6
require('dotenv').config();
const express = require("express");
const bodyParser = require("body-parser");
const ejs = require("ejs");
const mongoose = require("mongoose");
const session = require("express-session");
const passport = require("passport");
const passportLocalMongoose = require("passport-local-mongoose");
const GoogleStrategy = require('passport-google-oauth20').Strategy;
const findOrCreate = require("mongoose-findorcreate");
const cors = require("cors");


const app = express();

app.set('view engine', 'ejs');
// app.use(cors());
// app.use(express.json());
app.use(bodyParser.urlencoded({extended: true}));
app.use(express.static("public"));


app.use(session({
  resave: false,
  saveUninitialized: true,
}));


app.use(passport.initialize());
app.use(passport.session());


mongoose.connect('mongodb://localhost:27017/journalDB', {useNewUrlParser: true, useUnifiedTopology: true});
mongoose.set('useCreateIndex', true);

const journalSchema = new mongoose.Schema({
  title: String,
  category: String,
  subcategory: String,
  rating: Number,
  link: String,
  description: String,
});

const userSchema = new mongoose.Schema ({
  username: String,
  password: String,
  journal: [{type: mongoose.Schema.Types.ObjectId, ref: 'Journal'}]
});


userSchema.plugin(passportLocalMongoose);
userSchema.plugin(findOrCreate);


const Journal = mongoose.model("Journal", journalSchema);
const User = mongoose.model("User", userSchema);

每个商店都有一个带有描述的单独页面。我想添加一个按钮或输入标签，这会将这家商店保存到用户的架构中。

获取和发布路线：

app.get("/journals/:journalId", function(req, res){
  const requestedJournalId = req.params.journalId;

  Journal.findOne({_id: requestedJournalId}, function(err, foundJournal){
      res.render("stats", {
        _id: foundJournal._id,
        title: foundJournal.title,
        subcategory: foundJournal.subcategory,
        link: foundJournal.link,
        description: foundJournal.description
      });
  });
});

app.post("/stats", function(req, res){
    const favJournal = req.journal.id;
    User.findById(req.user.id, function(err, foundUser) {

        if (err) {
            console.log(err);
        } else {
            if (foundUser) {
                foundUser.journal.push(favJournal);
                foundUser.save(function() {
                    res.redirect("/favourite");
                });
            }
        }
    });
});

stats.ejs：

<div class="container py-4">
  <div class="row">
    <div class="col">
      <div class="flex-container-stats">
        <div class="stats-image">
          <img class="img-fluid" style="height: 350px;max-wdth:500px;"  id="img_DocPreview" src="images/clothes.jfif" alt="">
        </div>
        <div class="stats-description">
          <h1 class="display-5 fw-bold "><%=title%></h1>
          <p class="fs-4"><%=subcategory%></p>
          <a href="<%=link%>" target="_blank" ><i class="fab fa-instagram fa-3x"></i></a>
          <a href="https://www.facebook.com/" target="_blank" class="px-2"><i class="fab fa-facebook-square fa-3x"></i></a>
          <a href="https://telegram.org/" target="_blank" class="px-2"><i class="fab fa-telegram-plane fa-3x"></i></a>
        </div>
      </div>
        <form action="/stats" method="post">
          <div class="stats-button">
            <!-- <label for=""><%=_id%></label>
            <input type="submit" name="savedJournal" placeholder="Add to favourite"> -->
          </div>
        </form>
    </div>
  </div>
</div>

我是 MongoDB 和 node.js 的新手。不确定我缺少什么，也无法从遇到的类似问题中找到合适的解决方案。

Answer 1

将您的架构文件更改为类似于以下示例的内容：

const mongoose = require('mongoose');

const journalSchema = new mongoose.Schema({
    title: String,
    category: String,
    subcategory: String,
    rating: Number,
    link: String,
    description: String,
});

const userSchema = new mongoose.Schema({
    username: String,
    password: String,
    journal: [{type: mongoose.Schema.Types.ObjectId, ref: 'Journal'}]
});

module.exports.userSchema = mongoose.model('users', userSchema);
module.exports.journalSchema = mongoose.model('journals', journalSchema);

然后，这会将您的架构转换为实时模型，从而允许您的数据实际保存在您的数据库中。
然后要求您的数据库使用以下示例：

const express = require('express');
const app = express();
const Journal = require('./path/to/schema-file').journalSchema;
const User = require('./path/to/schema-file').userSchema;

app.get("/journals/:journalId", function(req, res){
  const requestedJournalId = req.params.journalId;

  Journal.findOne({_id: requestedJournalId}, function(err, foundJournal){
      res.render("stats", {
        _id: foundJournal._id,
        title: foundJournal.title,
        subcategory: foundJournal.subcategory,
        link: foundJournal.link,
        description: foundJournal.description
      });
  });
});

app.post("/stats", function(req, res){
    const favJournal = req.journal.id;
    User.findById(req.user.id, function(err, foundUser) {

        if (err) {
            console.log(err);
        } else {
            if (foundUser) {
                foundUser.journal.push(favJournal);
                foundUser.save(function() {
                    res.redirect("/favourite");
                });
            }
        }
    });
});