Error Message: Cannot read property of undefined - MongoDb, nodejs

[tdrsam]

I'm trying to add a MongoDb database to a nodejs app. I've never done this before and don't know how it works. I seem to have the Db installed, but I don't seem to be able to send data to it from a web form.

I have this in my app.js file:

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
mongoose.connect('mongodb://localhost/emedb');
var app = express();

var Schema = mongoose.Schema;

// create a schema
var userSchema = new Schema({
  moniker: { type: String, required: true,},
  email: { type: String, required: true,},
  password: { type: String, required: true },
  location: String,
  age: Number,
  created_at: Date,
  updated_at: Date
});

// on every save, add the date
userSchema.pre('save', function(next) {
  // get the current date
  var currentDate = new Date();
  
  // change the updated_at field to current date
  this.updated_at = currentDate;

  // if created_at doesn't exist, add to that field
  if (!this.created_at)
    this.created_at = currentDate;
	
  next();
});

var User = mongoose.model('emedb', userSchema);

// post to db
app.post('/newBen', function(req, res){
	new User({
		moniker: req.body.moniker,
		email: req.body.email, 
		password: req.body.password,
		location: req.body.location,
		age: req.body.age,
		created_at: req.currentDate,
		updated_at: req.currentDate
	}).save(function(err, doc){
		if(err)res.json(err);
		else res.send('Thank you for joining');
	});res.end();
});

module.exports = User;


/*
app.use(function(req,res,next){
    req.db = emedb;
    next();
});
*/

var routes = require('./routes/index');
var users = require('./routes/users');

And this is my jade file with the form that the data is supposed to be sent from:

extends layout

block content
  form(name='regBenForm' class='regForm' action='/newBen' method='post')
    label(for='moniker') Name
    input(type="text", name="moniker", id="moniker")
    label(for='email') Email
    input(type="email", name="email")
    label(for='password') Password
    input(type="password", name="password")
    label(for='passwordMatch') Repeat Password
    input(type="password", name="passwordMatch")
    label(for='age') Age
    input(type="number", name="age")
    label(for='location') Location
    input(type="text", name="location")
    button(type="submit" class='submitBtn') Go

And this is the error message I get in the broswer:

TypeError: Cannot read property 'moniker' of undefined
    at D:\node\eme\app.js:47:20
    at Layer.handle [as handle_request] (D:\node\eme\node_modules\express\lib\router\layer.js:95:5)
    at next (D:\node\eme\node_modules\express\lib\router\route.js:131:13)
    at Route.dispatch (D:\node\eme\node_modules\express\lib\router\route.js:112:3)
    at Layer.handle [as handle_request] (D:\node\eme\node_modules\express\lib\router\layer.js:95:5)
    at D:\node\eme\node_modules\express\lib\router\index.js:277:22
    at Function.process_params (D:\node\eme\node_modules\express\lib\router\index.js:330:12)
    at next (D:\node\eme\node_modules\express\lib\router\index.js:271:10)
    at expressInit (D:\node\eme\node_modules\express\lib\middleware\init.js:33:5)
    at Layer.handle [as handle_request] (D:\node\eme\node_modules\express\lib\router\layer.js:95:5)
    at trim_prefix (D:\node\eme\node_modules\express\lib\router\index.js:312:13)
    at D:\node\eme\node_modules\express\lib\router\index.js:280:7
    at Function.process_params (D:\node\eme\node_modules\express\lib\router\index.js:330:12)
    at next (D:\node\eme\node_modules\express\lib\router\index.js:271:10)
    at query (D:\node\eme\node_modules\express\lib\middleware\query.js:49:5)
    at Layer.handle [as handle_request] (D:\node\eme\node_modules\express\lib\router\layer.js:95:5)

I'm not sure if it's to do with the code I've commented out in the app.js file - around line 60 - or I just haven't properly called the form input.

[Dormilich]

from the message it looks req.body does not exist. I don’t know which version of express you’re using, so I can only point out its documentation.

[tdrsam]

That seems correct. I removed .body from all of the items to be posted to the db. Now, when I run a test in the browser, it redirects to the action of the form, which is /newBen. Another quick question. Do I use that file to post the data to the db, or can I use it to redirect to a new page, or both?

[Dormilich]

what file?

[tdrsam]

The /newBen file. I could use that a redirect. But it looks like the data I sent from the browser wasn't inserted to the db. I don't suppose you know of any MongoDB tutorials that would explain it?

[Dormilich]

The /newBen file.

there is no such file. /newBen is a route in your application that is handled by the function defined in Express.

I don't suppose you know of any MongoDB tutorials that would explain it?

I think you would need an Express tutorial, rather than a mongoose tutorial (a MongoDB tutorial won’t help as you don’t interact directly with MongoDB as would be the case if you’d use the MongoDB client on the command line)

[tdrsam]

Ok. Will look for that. Thanks for the help.

[mqasimkhan]

you have any solution of this ERROR in node.js, express.js, mongoose

{"errors":{"ema il":{"name":"Va lidatorError"," message":"Canno t read property 'isEmail' of undefined","pro perties":{"mess age":"Cannot read property 'isEmail' of undefined","typ e":"user defined","path" :"email","value ":"qasim.soften g29@gmail.com", "reason":{}},"k ind":"user defined","path" :"email","value ":"qasim.soften g29@gmail.com", "reason":{}},"a ddress":{"name" :"ValidatorErro r","message":"P ath `address` (`Bannu`) is shorter than the minimum allowed length (10).","propert ies":{"message" :"Path `address` (`Bannu`) is shorter than the minimum allowed length (10).","type":" minlength","min length":10,"pat h":"address","v alue":"Bannu"}, "kind":"minleng th","path":"add ress","value":" Bannu"},"addres s2":{"name":"Va lidatorError"," message":"Path `address2` (`New York`) is shorter than the minimum allowed length (10).","propert ies":{"message" :"Path `address2` (`New York`) is shorter than the minimum allowed length (10).","type":" minlength","min length":10,"pat h":"address2"," value":"New York"},"kind":" minlength","pat h":"address2"," value":"New York"}},"_messa ge":"User validation failed","name": "ValidationErro r","message":"U ser validation failed: email: Cannot read property 'isEmail' of undefined, address: Path `address` (`Bannu`) is shorter than the minimum allowed length (10)., address2: Path `address2` (`New York`) is shorter than the minimum allowed length (10)."}