create.js

var User = require('models/user').User;
var HttpError = require('error').HttpError;
var AuthError = require('models/user').AuthError;
var async = require('async');

exports.get = function(req, res) {
    res.render('login', {
        title: 'Авторизація'
    });
};

exports.post = function(req, res, next) {
    var username = req.body.username;

    if (!username) {
        return next(err);
    }

    async.waterfall([
        function(next) {
            User.findOne({username: username}, next);
        },
        function(user, next) {
            if (user) {
                res.send({
                    result: false,
                    message: "Користувач з таким логіном вже існує",
                    code: 2
                });
            } else {
                user = new User({username: username, password: '', isAdmin: false});

                user.save(function(err) {
                    if (err) return next(err);
                    res.send({
                        result: true,
                        user: JSON.stringify(user)
                    });
                });
            }
        }
    ], next);
};