mongoose When I Use update it updates Nothing with status 200(success) - mongodb

Question

I use update Query for push some data in array in Mongodb and I use mongoose in nodeJs.Pplease anyone can help out from this.
Model Schema :
var mongoose = require('mongoose')
var Schema = mongoose.Schema;
var bcrypt = require('bcrypt')
var schema = new Schema({
email: { type: String, require: true },
username: { type: String, require: true },
password: { type: String, require: true },
creation_dt: { type: String, require: true },
tasks : []
});
module.exports = mongoose.model('User',schema)
So I use this schema and I want to push data in tasks array and here is my route code for pushing data.
Route For Update Data in Tasks:
router.post("/newTask", isValidUser, (req, res) => {
addToDataBase(req, res);
});
async function addToDataBase(req, res) {
var dataa = {
pName: req.body.pName,
pTitle: req.body.pTitle,
pStartTime: req.body.pStartTime,
pEndTime: req.body.pEndTime,
pSessionTime: req.body.pSessionTime,
};
var usr = new User(req.user);
usr.update({ email: req.user.email }, { $push: { tasks: dataa } });
console.log(req.user.email);
try {
doc = await usr.save();
return res.status(201).json(doc);
} catch (err) {
return res.status(501).json(err);
}
}
Here I create a async function and call that function in route but when I post data using postman it response with status code 200(success) but it updates nothing in my database.
Output screenshot:
as you can see in this image task : [].. it updates nothing in that array but status is success
I don't know why is this happening.

Answer 1

You can achieve this task easier using findOneAndUpdate method.
router.put("/users", isValidUser, async (req, res) => {
var data = {
pName: req.body.pName,
pTitle: req.body.pTitle,
pStartTime: req.body.pStartTime,
pEndTime: req.body.pEndTime,
pSessionTime: req.body.pSessionTime,
};
try {
const user = await User.findOneAndUpdate(
{ email: req.user.email },
{
$push: {
tasks: data,
},
},
{ new: true }
);
if (!user) {
return res.status(404).send("User with email not found");
}
res.send(user);
} catch (err) {
console.log(err);
res.status(500).send("Something went wrong");
}
});
Also I strongly suggest using raw / JSON data for request body, that's how most ui libraries (reactjs, angular) send data.
To be able to parse json data, you need to add the following line to your main file before using routes.
app.use(express.json());
TEST
Existing user:
{
"tasks": [],
"_id": "5e8b349dc285884b64b6b167",
"email": "test#gmail.com",
"username": "Kirtan",
"password": "123213",
"creation_dt": "2020-04-06T14:21:40",
"__v": 0
}
Request body:
{
"pName": "pName 1",
"pTitle": "pTitle 1",
"pStartTime": "pStartTime 1",
"pEndTime": "pEndTime 1",
"pSessionTime": "pSessionTime 1"
}
Response:
{
"tasks": [
{
"pName": "pName 1",
"pTitle": "pTitle 1",
"pStartTime": "pStartTime 1",
"pEndTime": "pEndTime 1",
"pSessionTime": "pSessionTime 1"
}
],
"_id": "5e8b349dc285884b64b6b167",
"email": "test#gmail.com",
"username": "Kirtan",
"password": "123213",
"creation_dt": "2020-04-06T14:21:40",
"__v": 0
}
Also as a side note, you had better to create unique indexes on username and email fields. This can be done applying unique: true option in the schema, but better to create these unique indexes at mongodb shell like this:
db.users.createIndex( { "email": 1 }, { unique: true } );
db.users.createIndex( { "username": 1 }, { unique: true } );

Answer 2

It's been awhile since I've done mongoose, but I'm pretty sure <model>.update() also actively updates the record in Mongo.
You use .update() when you want to update an existing record in Mongo, but you are instantiating a new User model (i.e. creating a new user)
try the following code instead for a NEW USER:
router.post('/newTask', isValidUser, (req, res) => {
addToDataBase(req,res)
})
async function addToDataBase(req, res) {
var dataa = {
pName: req.body.pName,
pTitle: req.body.pTitle,
pStartTime: req.body.pStartTime,
pEndTime: req.body.pEndTime,
pSessionTime: req.body.pSessionTime
}
// email field is already in `req.user`
var usr = new User({ ...req.user, tasks: [dataa] });
console.log(req.user.email);
try {
await usr.save();
return res.status(201).json(doc);
}
catch (err) {
return res.status(501).json(err);
}
}
Now, if you wanted to update an existing record :
router.post('/newTask', isValidUser, (req, res) => {
addToDataBase(req,res)
})
async function addToDataBase(req, res) {
var dataa = {
pName: req.body.pName,
pTitle: req.body.pTitle,
pStartTime: req.body.pStartTime,
pEndTime: req.body.pEndTime,
pSessionTime: req.body.pSessionTime
}
try {
await usr. updateOne({ email : req.user.email}, { $push: { tasks: dataa } });
return res.status(201).json(doc);
}
catch (err) {
return res.status(501).json(err);
}
}
For more info read: https://mongoosejs.com/docs/documents.html