javascript - Mongoose schema methods and "this" updating properties - NodeJS -

in usersschema want set hashed password hash field. schema looks this:

// models/user-model.js  const usersschema = new schema({   name: {     type: string,     required: true   },   email: {     type: string,     unique: true,     required: true   },   hash: string,   salt: string }, { timestamps: true });  usersschema.methods.setpassword = (password) => {   this.salt = crypto.randombytes(16).tostring('hex');   this.hash = crypto.pbkdf2sync(password, this.salt, 1000, 64).tostring('hex'); }; 

in route, trying set new user name, email, , password. here's route:

// routes/users.js  router.get('/setup', (req, res) => {   const user = new user();    user.name = 'jacob';   user.email = 'jacob@gmail.com';    user.setpassword('password');    user.save()     .then((user) => {       const token = user.generatejwt();       res.json({ yourtoken: token });     })     .catch((err) => {       res.json(err);     }); }); 

when console.log(user) route, gives me following: { name: 'jacob', email: 'jacob@gmail.com' }

i know setpassword method works far creating proper hashes. not, however, save hashes user object. how apply setpassword user object calls can set salt , hash properties?

by using fat arrow notation, you're changing this referring in setpassword, it's not pointing user document anymore.

try using regular function declaration:

usersschema.methods.setpassword = function(password) {   this.salt = crypto.randombytes(16).tostring('hex');   this.hash = crypto.pbkdf2sync(password, this.salt, 1000, 64).tostring('hex'); };