javascript - Why isn't .save for Mongoose working in ReactJS? -

i have reactjs , redux connected mongodb, mongoose.

i have mongoose schema (user.js) set so:

var userschema = new schema({   email: {     type: string,     lowercase: true,     unique: true,     required: true   }, }) 

and api controller receives email string request, , if nothing entered in text field, sends 422 error, , inside user.findone, if email exists in database, throws 422 error , if not, user.save save in database.

"use strict";  const user = require('../models/user')  exports.register = function(req, res, next) {   const email = req.body.email;   console.log('error 1')    if(!email) {     return res.status(422).send({ error: 'you must enter email address.'})     console.log('error 1')   }    user.findone({ email: email }, function(err, existinguser) {     if(err) { return next(err); }     console.log('error 2')     if(existinguser) {       return res.status(422).send({ error: 'that email address in use.'})     }     console.log('error 3')     let user = new user({       email: email,     })     console.log('error 4')     user.save(function(err, user) {       if(err) { return next(err); }       console.log('error 5')       res.status(201).json({         user: user,       })     })   })   console.log('error 6') } 

and making post request such:

export function registeruser({ email }) {   return function(dispatch) {     axios.post(`${api_url}/auth/register`, { email })     .then(response => {       console.log('this testing purpose')       console.log(response)       dispatch({ type: auth_user });     })     .catch((error) => {       errorhandler(dispatch, error.response, auth_error)     });   } } 

i made several post requests , successful status api sever config: {'database': 'mongodb://localhost/practicedb', 'port': process.env.port || 3000}, yet data never gets saved , database (practicedb) doesn't show on terminal.

everything seem set correctly why problem? missing something? insight or guidance appreciated.

thank in advance!

here logs , what's options request never made:

tried registering same email again:

correct if i'm wrong bare save method not async. save method return promise. see http://mongoosejs.com/docs/promises.html

edit

user.save().then(function(doc) {     if (!doc) { next(new error('error while persisting!')); }      console.log('error 5');      res.status(201).json({         user: doc     }); }); 

you can achieve promised library (q, bluebird) or use es6 promise. alternatively use async.

example q. not tested:

"use strict";  const user = require('../models/user'); const q = require('q'); //add https://github.com/kriskowal/q  exports.register = function(req, res, next) {   const email = req.body.email;   console.log('error 1')    if(!email) {     return res.status(422).send({ error: 'you must enter email address.'})     console.log('error 1')   }    var deferred = q.defer();   user.findone({ email: email }, function(err, existinguser) {     if(err) { return next(err); }     console.log('error 2')     if(existinguser) {       return res.status(422).send({ error: 'that email address in use.'})     }     console.log('error 3')     let user = new user({       email: email,     })     console.log('error 4')     user.save(function(err, user) {       if(err) {            deferred.reject(err);           return next(err);        }       console.log('error 5')       deferred.resolve(user); //     });      res.status(201).json({         user: deferred.promise,       })   })   console.log('error 6') }