HavanaHail - Hailey Anderson Unfinished

README.md

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+Unfinished but submitting for credit. 
 Assignment 3 - Persistence: Two-tier Web Application with Database, Express server, and CSS template
 ===
 

app.js

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+require('./models/mongodb');
+require('express-handlebars');
+
+
+///////////////////////////////////////////////////////////
+const express = require('express')
+const app = express()
+
+const path = require('path');
+const exphb = require('express-handlebars');
+const bodyparser = require('body-parser');
+const courseController = require('./controllers/courseController');
+
+app.use(bodyparser.urlencoded({
+extended: true
+}));
+
+
+
+
+app.get('/', (req, res) => {
+  res.send('/course')
+})
+
+app.use(bodyparser.json());
+
+//Configuring Express middleware for the handlebars
+app.set('views', path.join(__dirname, '/views/'));
+app.engine('hbs', exphb.engine({ extname: 'hbs', defaultLayout: 'mainLayout', layoutDir: __dirname + 'views/layouts/' }));
+app.set('view engine', 'hbs');
+
+//Establish the server connection
+//PORT ENVIRONMENT VARIABLE
+const port = process.env.PORT || 8080;
+app.listen(port, () => console.log(`Listening on port ${port}..`));
+
+//Set the Controller path which will be responding the user actions
+app.use('/course', courseController);

controllers/courseController.js

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+//Import the dependencies
+const express = require('express');
+const mongoose = require('mongoose');
+//Creating a Router
+var router = express.Router();
+//Link
+const Course = mongoose.model('Course');
+
+//Router Controller for READ request
+router.get('/',(req, res) => {
+res.render("course/courseAddEdit", {
+viewTitle: "Insert a New Course for Edureka"
+});
+});
+
+//Router Controller for UPDATE request
+router.post('/', (req,res) => {
+if (req.body._id == '')
+insertIntoMongoDB(req, res);
+else
+updateIntoMongoDB(req, res);
+});
+
+//Creating function to insert data into MongoDB
+function insertIntoMongoDB(req,res) {
+var course = new Course();
+course.courseName = req.body.courseName;
+course.courseId = req.body.courseId;
+course.courseDuration = req.body.courseDuration;
+course.courseFee = req.body.courseFee;
+course.save((err, doc) => {
+if (!err)
+res.redirect('course/list');
+else
+console.log('Error during record insertion : ' + err);
+});
+}
+
+//Creating a function to update data in MongoDB
+function updateIntoMongoDB(req, res) {
+Course.findOneAndUpdate({ _id: req.body._id }, req.body, { new: true }, (err, doc) => {
+if (!err) { res.redirect('course/list'); }
+else {
+if (err.name == 'ValidationError') {
+handleValidationError(err, req.body);
+res.render("course/courseAddEdit", {
+//Retaining value to be displayed in the child view
+viewTitle: 'Update Course Details',
+employee: req.body
+});
+}
+else
+console.log('Error during updating the record: ' + err);
+}
+});
+}
+
+//Router to retrieve the complete list of available courses
+router.get('/list', (req,res) => {
+Course.find((err, docs) => {
+if(!err){
+res.render("course/list", {
+list: docs
+});
+}
+else {
+console.log('Failed to retrieve the Course List: '+ err);
+}
+});
+});
+
+//Creating a function to implement input validations
+function handleValidationError(err, body) {
+for (field in err.errors) {
+switch (err.errors[field].path) {
+case 'courseName':
+body['courseNameError'] = err.errors[field].message;
+break;
+default:
+break;
+}
+}
+}
+
+//Router to update a course using it's ID
+router.get('/:id', (req, res) => {
+Course.findById(req.params.id, (err, doc) => {
+if (!err) {
+res.render("course/courseAddEdit", {
+viewTitle: "Update Course Details",
+course: doc
+});
+}
+});
+});
+
+//Router Controller for DELETE request
+router.get('/delete/:id', (req, res) => {
+Course.findByIdAndRemove(req.params.id, (err, doc) => {
+if (!err) {
+res.redirect('/course/list');
+}
+else { console.log('Failed to Delete Course Details: ' + err); }
+});
+});
+
+module.exports = router;

courses.json

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+[{
+  "_id": {
+    "$oid": "63b3c5b30138b43eb762c235"
+  },
+  "courseName": "Heathens",
+  "courseId": "1",
+  "courseDuration": "semester",
+  "courseFee": "twenty five"
+},{
+  "_id": {
+    "$oid": "63b3c5ef0138b43eb762c237"
+  },
+  "courseName": "Toe breathing",
+  "courseId": "2",
+  "courseDuration": "semester",
+  "courseFee": "twenty five"
+},{
+  "_id": {
+    "$oid": "63b3e81ea3217d03c1f1c3f0"
+  },
+  "courseName": "Harriet",
+  "courseId": "10000",
+  "courseDuration": "17",
+  "courseFee": "100",
+  "__v": 0
+},{
+  "_id": {
+    "$oid": "63b4e6f290c349f1120f71c8"
+  },
+  "courseName": "Advocacy In The Times Of Resistance",
+  "courseId": "10002",
+  "courseDuration": "14",
+  "courseFee": "525",
+  "__v": 0
+}]

models/course.model.js

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+const mongoose = require('mongoose');
+
+//Attributes of the Course object
+var courseSchema = new mongoose.Schema({
+courseName: {
+type: String,
+required: 'This field is required!'
+},
+courseId: {
+type: String
+},
+courseDuration: {
+type: String
+},
+courseFee: {
+type: String
+}
+});
+
+mongoose.model('Course', courseSchema);

models/mongodb.js

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+const mongoose = require('mongoose');
+
+mongoose.connect('mongodb://localhost:27017/IAmBoss', {useNewUrlParser: true,     useUnifiedTopology: true,
+family: 4,}, (err) => {
+if (!err) {
+console.log('Successfully Established Connection with MongoDB')
+}
+else {
+console.log('Failed to Establish Connection with MongoDB with Error: '+ err)
+}
+});
+
+//Connecting Node and MongoDB
+require('./course.model');