'Not able to add more than 1 post request in the mongo db

i am using mongo db to fetch and post the data but unable to post more than 1 request here is my code ON posting the different values second time i am getting the error I am unable to find the issue as i am using different values to post but still getting the same error

the very first portion of code. the error:

"driver": true,
"name": "MongoError",
"index": 0,
"code": 11000,
"keyPattern": {
    "id": 1
},
"keyValue": {
    "id": null
}

const express = require('express')
const app=express();
const cors=require('cors')
const mongoose=require('mongoose');


mongoose.connect('mongodb://localhost:27017/test1',{useNewUrlParser: true,
useUnifiedTopology: true,
useCreateIndex: true}).then(()=>{console.log("connected")}).catch(err=>console.log(err));
const bodyParser = require("body-parser")

app.use(bodyParser.urlencoded({ extended: true }));
app.use(cors());
app.use(express.json());
const userroute=require('./routes/user')

app.use('/user',userroute);

app.listen(8000,()=>console.log("running on 8000"));

const mongoose = require('mongoose')

const userschema=new mongoose.Schema({
   
    name:{
        type:String,
        required:true,
        unique:false
    },
    img:{
        type:String,
        required:true,
        unique:false
    },
    summary:{
        type:String,
        required:true,
        unique:false
    }
})
module.exports=mongoose.model("User",userschema)

const express=require('express')
const User = require('../model/User.model')
const router=express.Router()

router.get('/',(req,res)=>{
    User.find().then(users=>res.json(users)).catch(err=>res.json(err))
})
module.exports= router;  

router.post('/add',(req,res)=>{
    const name=req.body.name;
    const img=req.body.img;
    const summary=req.body.summary;
    const details = new User({name,img,summary});
    details.save().then(()=>res.json(" added ")).catch(err=>res.json(err))
})
router.delete('/:id',(req,res)=>{
    User.findByIdAndDelete(req.params.id).
    then(()=>res.send("deleted")).catch((err)=>res.send(err));
})
node.jsmongodbexpressmongoosemongoose-schema


Solution 1:[1]

Adding in answer to write code, in the comment section it becomes messy to understand the code.

router.post('/add',(req,res)=>{
    const name=req.body.name;
    const img=req.body.img;
    const summary=req.body.summary;
    const _id = mongoose.Types.ObjectId();
    const details = new User({_id, name, img, summary});
    details.save().then(()=>res.json(" added ")).catch(err=>res.json(err))
})

Ideally, mongoose should create _id automatically, but we can also create custom ids

Solution 2:[2]

I had exactly the same problem, what I did to solve it was download the latest version of mongodb, https://www.mongodb.com/try/download/community, update the path in the environment variables with the new version, download the latest version of mongo shell, finally restart the computer.

Solution 3:[3]

I was facing the same issue, just simply delete the collection from database and then make a new post request

Solution 4:[4]

Damusan's advice worked for me. This problem was insane because everyone who cloned my repo to help me had zero problems, so I knew it was on my end. The user collection accepted one user, then stopped and did exactly as described! The following fixed the problem:

  1. OPEN THE MONGODB SHELL

    mongo

  2. MAKE SURE YOU HAVE THE RIGHT DB NAME=COMMAND TO LIST ALL DATABASES

    show dbs

  3. SWITCH TO THE DATABASE

    use <name_of_your_db>

  4. GET A LIST OF ALL YOUR COLLECTIONS TO CONFIRM USERS IS THERE

    show collections

  5. LIST ALL THE DATA IN THE USERS COLLECTION- IT SHOULD BE JUST ONE USER

    db.users.find()

  6. DROP THE COLLECTION -NO WORRIES, WHEN YOU MAKE A POST AGAIN IT WILL RE-CREATE THE USER COLLECTION

    db.users.drop()

  7. TRY TO LIST THE DATA AGAIN - IT SHOULD BE UNRESPONSIVE

    db.users.find()

  8. LIST YOUR COLLECTIONS AGAIN- IT SHOULD SHOW NO USERS COLLECTION

    show collections

  9. EXIT THE SHELL

    exit

That's it, start the server and make a post for a user in Insomnia, and it should work, more than once!

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 r7r
Solution 2 Damusan
Solution 3 Meraj Sheikh
Solution 4 Nimantha

Related Questions