Mongoose how to update an user info - node.js

Question

I am having trouble making the #PUT method for my application. So far, I managed to make the #GET, #POST and #DELETE. So after doing some research, it turns out that the #PUT is a mixture of my #GET and #POST.
My #GET (by cuid) method
export function getUser(req, res) {
// just get the user information
User.findOne({ cuid: req.params.cuid }).exec((err, user) => {
if (err) {
return res.status(500).send(err);
}
return res.json({ user });
});
}
My #POST method
export function addUser(req, res) {
// Check for empty fields
if (!req.body.user.firstName || !req.body.user.lastName ||
!req.body.user.email || !req.body.user.password ||
!req.body.user.studentId) {
return res.status(403).end();
}
const newUser = new User(req.body.user);
// Let's sanitize inputs
newUser.firstName = sanitizeHtml(newUser.firstName);
newUser.lastName = sanitizeHtml(newUser.lastName);
newUser.studentId = sanitizeHtml(newUser.studentId);
newUser.email = sanitizeHtml(newUser.email);
newUser.password = sha512(newUser.password).toString('hex');
newUser.cuid = cuid();
newUser.save((err, saved) => {
if (err) {
return res.status(500).send(err);
}
return res.json({ user: saved });
});
}
The req.body.user will be the same in the #PUT method as in the addUser function on the #POST. In other words, the req.body.user will be something like { firstname: 'assa', lastName: 'nen', email: 'ed#aid.com', password: 'ddee', student: 112 }
My question is how would you modify the specific user (by cuid) information and save it to the db? In other words, how would you write the #PUT method

Answer 1

Try findOneAndUpdate
export function updateUser(req, res) {
var userId = req.body.userId;
var conditions = {
_id : userId
}
var update = {
firstName = sanitizeHtml(req.body.firstName );
lastName = sanitizeHtml(req.body.lastName);
studentId = sanitizeHtml(req.body.studentId);
email = sanitizeHtml(req.body.email);
password = sha512(req.body.password).toString('hex');
}
model.findOneAndUpdate(conditions,update,function(error,result){
if(error){
// handle error
}else{
console.log(result);
}
});
}