Mongoose Tutorial - Problem- books not defined

gistfile1.txt

Hitting books route gives back ReferenceError: Book is not defined


App.js
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');
var db = 'mongodb://localhost:27017/example'
mongoose.connect(db);

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));


app.get('/',(req,res) =>{
  res.send("TEST")
})

app.get('/books',(req,res) => {
  console.log("getting all books")
  Book.find({})
  .exec(function(err, books){
    if (err){
      res.send("Error " + err)
    } else {
      console.log(books)
      res.json(books)
    }
  })
})

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;



Book.js

var mongoose = require(mongoose),
    Schema   = mongoose.Schema;

var BookSchema = new Schema({
  title:String,
  author:String,
  catrgory:String 
})

module.exports = mongoose.model('Book', BookSchema)




Mongo shell

example 26 >db.Books.find().pretty()
{
	"_id" : ObjectId("58e66337d5ba20d9ee81e23f"),
	"name" : "Good Book",
	"author" : "GOD",
	"category" : "Biblical"
}
{
	"_id" : ObjectId("58e66338d5ba20d9ee81e240"),
	"name" : "Girly",
	"author" : "Suzie Q",
	"category" : "for women"
}
example 27 >db
example