I am creating an application for online course. I have created a schema for user registration. In the schema, I also want to add the name of courses a user in enrolled. Course Name being an array. User registration is successful. after that I have created a route for /dashboard, where the user sends the POST request to add the course name. That course should be added in the same registration schema field for course Enrolled. However When I save a new object of registration schema, it creates a new document field courseEnrolled field. I want this POST request value to be added in the user's document field of courseEnrolled as an array.
Here is how I have defined my registration schema. Its name in account.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var passportLocalMongoose = require('passport-local-mongoose');
var courseSchema = new Schema({ courseName : String });
var Account = new Schema({
username: {
type: String,
unique: true
},
password: String,
email: String,
firstName: String,
lastName: String,
courseEnrolled: [{courseName : String}]
});
Account.plugin(passportLocalMongoose);
module.exports = mongoose.model('Account', Account);
Here is my passport registration . register.js
var passport = require('passport');
var LocalStrategy = require('passport-local').Strategy;
var User = require('../models/account');
var bCrypt = require('bcrypt-nodejs');
var course = require('../models/courseEnrollment');
module.exports = function(passport){
passport.use('register', new LocalStrategy({
passReqToCallback : true // allows us to pass back the entire request to the callback
},
function(req, username, password, done) {
findOrCreateUser = function(){
// find a user in Mongo with provided username
User.findOne({ 'username' : username }, function(err, user) {
// In case of any error, return using the done method
if (err){
console.log('Error in SignUp: '+err);
return done(err);
}
// already exists
if (user) {
console.log('User already exists with username: '+username);
return done(null, false, req.flash('message','User Already Exists'));
} else {
// if there is no user with that email
// create the user
var newUser = new User();
var newCourse = new course();
// set the user's local credentials
newUser.username = username;
newUser.password = createHash(password);
newUser.email = req.body.email;
newUser.firstName = req.body.firstName;
newUser.lastName = req.body.lastName;
newUser.courseEnrolled = req.body.courseEnrolled;
// save the user
newUser.save(function(err) {
if (err){
console.log('Error in Saving user: '+err);
throw err;
}
console.log('User Registration succesful');
return done(null, newUser);
});
}
});
};
// Delay the execution of findOrCreateUser and execute the method
// in the next tick of the event loop
process.nextTick(findOrCreateUser);
})
);
// Generates hash using bCrypt
var createHash = function(password){
return bCrypt.hashSync(password, bCrypt.genSaltSync(10), null);
}
}
I can register a user successfully. After that I have a route for /dashboard, where I handle the POST request to add a course. Here is the snippet of my /dashboard handling POST request.
var User = require('../models/account');
/* POST dashboard Page */
router.post('/dashboard', isAuthenticated, function (req, res) {
sess = req.session.passport.user;
console.log('session value is: ' + sess);
var newUser = new User();
console.log('newUser id is: ' + newUser._id);
var currentUser = req.user._id;
console.log('current User id is: ' + currentUser);
var myUser = req.user;
console.log('myUsers value is: ' + myUser);
var myUserCourse = req.user.courseEnrolled;
if (sess == currentUser) {
//var newCourse = new course();
console.log('request received: ' + req.body.courseEnrolled);
req.user.courseEnrolled = req.body.courseEnrolled;
newUser.save(function (err, data) {
if(error)
throw error;
else {
console.log('course Updated');
}
});
res.render('home', {user: req.user});
}
});
This newUser.save() function creates a new document in the mongodb and store the courseEnrolled. I want to store the value of req.body.courseEnrolled in the same document field where other user value is defined.
This is getting stored in collection:- 'accounts' for the user
{
"_id" : ObjectId("57f95afd9c78b91c69334f0d"),
"lastName" : "Nehra",
"firstName" : "Ashish",
"email" : "[email protected]",
"password" : "$2a$10$YzLvbQTHFtq5l0ooP0njOux94Rp.pm.Pkb/TugBnCSTUJNhBBonLG",
"username" : "ashish",
"courseEnrolled" : [
"about to change something now"
],
"__v" : 1
}
And there is a new document being created like this in the same collection.
{
"_id" : ObjectId("5803fc4342ca1d3167102300"),
"courseEnrolled" : [ ],
"__v" : 0
}
This is logical because first you do a it on various user objects (req.user / new user):
**var newUser = new User();
This will create a new User object, and then:
newUser.save(function (err, data) {
This will save the newly created user into a new document. If you want to use the .save, rewrite it to (reused your own code):
User.findOne({ 'username' : username }, function(err, user) {
// In case of any error, return using the done method
if (err){
console.log('Error in SignUp: '+err);
return done(err);
}
user.courseEnrolled = req.body.courseEnrolled;
user.save(function (err, data) {
if(err)
throw err;
else {
console.log('course Updated');
}
});