我是Node和创建api的新手。我可以在请求正文中传递json并将其登录到控制台,但是当我尝试将此数据添加到数据库时出现问题。我正在尝试将数据添加到DB(cloud:Atlas),但是post.save没有运行。这是我的post.model.js
const mongoose = require('mongoose')
const PostSchema = mongoose.Schema({
title: {
type: String,
required: true
},
description: {
type: String,
required: true
},
date: {
type: Date,
default: Date.now
}
})
module.exports = mongoose.model('Posts', PostSchema)
这是控制器(posts.js)
const express = require('express')
const router = express.Router()
const Posts = require('../model/posts.model')
router.get('/', (req, res) => res.send('We are on posts page'))
router.get('/specific', (req, res) => res.send('We are on specific post page'))
router.post('/', async (req, res) => {
const post = new Posts({
title: req.body.title,
description: req.body.description
})
// try{
// const savedPost = await this.post.save()
// res.json(savedPost)
// }
// catch(arr){
// res
// }
console.log('before save');
post.save().then(data => {
console.log("in then");
res.json(data)
})
.catch(err => {
console.log('in catch');
res.json({ message: err })
})
})
module.exports = router
这是我的app.js
const express = require('express')
const app = express()
const mongoose = require('mongoose')
const bodyParser =require('body-parser')
require('dotenv/config')
//Import Routes
const postsRoutes = require('./routes/posts')
//Middelware
app.use(bodyParser.json())//to be used before app.use(<routes>)
app.use('/posts', postsRoutes)
//app.use(express.bodyParser())
//ROUTES
app.get('/', (req, res) => res.send('We are on home page'))
app.get('/posts', (req, res) => res.send('WE are on posts page '))
//Connect to DB
mongoose.connect('DB_CONNECTION', { useNewUrlParser: true }, () => console.log('Connected to db'))
//how to start listening to the server
app.listen(3000)
而且集合何时会在我的数据库中形成?当我添加数据的第一个条目时会发生这种情况吗?
您未连接到monogodb。您必须添加IP地址和集合名称。如果没有使用该名称的集合,它将使用该名称创建一个新集合。
mongoose.connect('mongodb://localhost/myDB', {
useNewUrlParser: true
});