how to fix "model.findByIdAndUpdate' not updating documents in mongodb 4.0? - mongodb

Question

I'm learning expressjs and i'm trying to update a document in my mongodb database by id and using PUT to specify a route, after entering this command in the terminal:
curl -X PUT --data "name =James&age = 20&nationality=American"http://localhost:3000/people/5d3ba2a863ba682d70242131
It prints out the document but nothing has been updated
I have used {new:true} as recommended against the default setting ({new:false}) however nothing has changed. without specifying any route it works
e.g
Person.findOneAndUpdate({name:'deean'},{age:34},function(err,response){
console.log(response);
});
the above code works
but this doesn't:
app.put('/people/:id', function(req, res){
Person.findByIdAndUpdate(req.params.id, req.body, {new: true} ,function(err, response){
if(err)
res.json({message:"Error in updating person with id" + req.params.id});
res.json(response);
});
});
app.listen(3000);
the original document i am trying to change is
{ _id: 5d3ba2a863ba682d70242131,
name: 'deean ajashi',
age: 34,
nationality: 'indian',
__v: 0 } ]
this is the output i'm getting on the terminal
C:\Users\Diola>curl -X PUT --data "name = James&age = 20&nationality = American" http://localhost:3000/people/5d3ba2a863ba682d70242131
{"_id":"5d3ba2a863ba682d70242131","name":"dean ajashi","age":34,"nationality":"indian","__v":0}
C:\Users\Diola>
The format i'm using is from Tutorialspointclick to check out page on Tutorialspoint
edit: i think this is what you mean by model and router file though i'm not sure
var express = require('express');
var multer = require("multer");
var upload = multer();
var app = express();
app.set('view engine', 'pug');
app.set('views', './views');
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(upload.array());
app.use(express.static('public'));
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/mydb', { useNewUrlParser: true });
var personSchema = mongoose.Schema({
name: String,
age: Number,
nationality: String
});
var Person = mongoose.model("Person", personSchema);
app.get('/person', function(req, res){
res.render('person');
});
app.post('/person', function(req, res){
var personInfo = req.body;
console.log('recived your request');
console.log(req.body);
if(!personInfo.name || !personInfo.age || !personInfo.nationality){
res.render('show_message', {
message: "Sorry, you provided worng info", type: "error"});
} else {
var newPerson = new Person({
name: personInfo.name,
age: personInfo.age,
nationality: personInfo.nationality
});
newPerson.save(function(err, Person){
if(err)
res.render('show_message', {message: "Database error", type: "error"});
else
res.render('show_message', {
message: "New person added", type: "success", person: personInfo});
});
}
});

Answer 1

when you pass {new: true} it returns the updated document (Vs) old document if it's false it has nothing to do with update operation, Can you give us your model and router file, meanwhile - try below code & check if you're able to get request by printing req.params.id and req.body :
app.put('/people/:id', function(req, res){
Person.findByIdAndUpdate(req.params.id, {$set:req.body}, {new: true} ,function(err, response){
if(err) res.json({message: "Error in deleting record id " + req.params.id});
else res.json(response);
});
});
app.listen(3000);