如何使用 Mongoose 将键值对附加到现有的 Mongodb 对象

Question

 const express = require('express'); const bcrypt = require('bcryptjs'); const passport = require('passport'); const { ensureAuthenticated } = require('../config/auth'); const router = express.Router(); //User/Post model const User = require('../models/DBmusevista'); //Welcome/register page router.get('/', (req, res) => res.render('register')); //Login page router.get('/login', (req, res) => res.render('login')); //Home page router.get('/home', ensureAuthenticated, (req, res) => res.render('home', {user_mv: req.user})); //Create topic page router.get('/create-topic', ensureAuthenticated, (req, res) => res.render('create-topic', {user_mv: req.user})); //Register handle router.post('/', (req, res) => { const {firstname, lastname, username, email, password} = req.body; let errors =[]; if(!firstname || !lastname || !username || !email || !password) { errors.push({msg: 'Please check all fields.'}); }; //Check password length if(password.length < 6) { errors.push({msg: 'Password should be at least 6 characters.'}); }; if(errors.length > 0){ res.render('register', { errors, firstname, lastname, username, email, password }); }else { //Validation passed User.findOne({email: email}) .then(user => { if(user){ //User exists errors.push({msg: 'Email is already registered.'}) res.render('register', { errors, firstname, lastname, username, email, password }); } else { const newUser = new User({ //Check User firstname, lastname, username, email, password }); //Hash password bcrypt.genSalt(10, (err, salt) => bcrypt.hash(newUser.password,salt, (err, hash) => { if(err) throw err; //Set password to hash newUser.password = hash; //Save user newUser.save() .then(user => { req.flash('success_msg', 'You are now registered and can now log in'); res.redirect('/login'); }) .catch(err => console.log(err)); })) } }); } }); //Post handle router.post('/create-topic', (req, res) => { let newObj = { title: req.body.title, category: req.body.category, vista: req.body.vista, description: req.body.description } User.updateOne({username: user_mv.username}, { $set: {post: newObj}}); res.send('Hello'); //This is the code that does not work. Anything else I've tried has not worked. }); //Login handle router.post('/login', (req, res, next) => { passport.authenticate('local', { successRedirect: '/home', failureRedirect: '/login', failureFlash: true })(req, res, next); }); module.exports = router;

 const mongoose = require('mongoose'); const DBmusevistaSchema = mongoose.Schema({ firstname: { type: String, required: false }, lastname: { type: String, required: false }, username: { type: String, required: false }, email: { type: String, required: false }, password: { type: String, required: false }, date: { type: Date, default: Date.now } }); const DBmusevista = mongoose.model('DBmusevista', DBmusevistaSchema); module.exports = DBmusevista;

When an individual comes to my website the beginning page ('/') is a registration for for my site. I have a post request for my MongoDB collection that creates a 'user register' object (fname, lname, username, email, pass). Once logged in ('/home') a user can then create a new post(s) form that is located in my create-topic.ejs file('/create-topic'). I'm new to using MongoDB so my question is how can I append the post submitted (title, category, vista, description) to an array for the users' object.

I'm not sure if I should add an array (posts: []) to DBmusevistaSchema and create a Post.Schema({key: value}) in my DBmusevista file? I tried using User.findOne but I cannot get it to work. Please help.

Answer 1

try {
  const pirs = await Pir.find();
  pirs.forEach(async (pir) => {
  let pir2 = new Pir();
  pir.isSubmitted = false;
  pir2 = pir;
  const out = await pir2.save();
  console.log(out);      
  });
} catch (err) {
  next(err);
}