Mongoose - findByIdAndUpdate - doesn't work with req.body - node.js

Question

I have a problem with update documents in mongodb over mongoose.
My model bellow:
var mongoose = require('mongoose');
var bcrypt = require('bcrypt-nodejs');
var UserSchema = new mongoose.Schema({
first_name:{
type: String
},
last_name:{
type: String
},
email:{
type: String,
unique: true,
required: true
},
password:{
type: String,
required: true
},
is_active:{
type: Boolean,
default: true
},
last_login:{
type: Date
}
});
module.exports = mongoose.model('User', UserSchema);
Controller put function bellow:
exports.updateUser = function (req, res) {
console.log(req.body);
User.findByIdAndUpdate(req.body.user_id, {$set:req.body}, function(err, result){
if(err){
console.log(err);
}
console.log("RESULT: " + result);
});
res.send('Done')
}
Output on console:
Listening on port 3000... { first_name: 'Michal', last_name: 'Test' }
PUT /api/users/54724d0fccf520000073b9e3 200 58.280 ms - 4
The printed params are provided as form-data (key-value). Looks that is not working at least for me any idea what is wrong here?

Answer 1

You have to use req.params.user_id instead req.body.user_id
exports.updateUser = function (req, res) {
console.log(req.body);
User.findByIdAndUpdate(req.params.user_id,{$set:req.body},{new:true}, function(err, result){
if(err){
console.log(err);
}
console.log("RESULT: " + result);
res.send('Done')
});
};

Answer 2

I found the mistake. Note that I'm calling
req.body.user_id
where should be
req.params.user_id
url is (PUT) http://127.0.0.1:3000/api/users/54724d0fccf520000073b9e3

Answer 3

Further, the req.body would have key value as Text and realized as String object, inside the code. Thus, it is useful to parse the string into JSON using JSON.parse(req.body.user) - while the user is the key and { first_name: 'Michal', last_name: 'Test' } is the value.
console.log(req.body);
var update = JSON.parse(req.body.user);
var id = req.params.user_id;
User.findByIdAndUpdate(id, update, function(err, result){
if(err){
console.log(err);
}
console.log("RESULT: " + result);
res.send('Done')
});
Note: the update value is sent to Mongo DB as
{$set: { first_name : 'Michal`, last_name: 'Test' }
Further reference: Mongoose JS documentation - findByIdAndUpdate