app.js

var bodyParser 	= require('body-parser');
var methodOverride  = require('method-override');
var expressSanitizer 	= require('express-sanitizer');
var mongoose 			= require('mongoose');
var express 				= require('express');
var app						 = express();

/*APP CONFIG*/
mongoose.set('useUnifiedTopology' , true);
mongoose.connect("mongodb://localhost/restful_blog_app", {useNewUrlParser: true, useFindAndModify:false});
app.set('view engine', 'ejs');
app.use(express.static('public'));
app.use(bodyParser.urlencoded({extended: true}));
app.use(expressSanitizer());	//after the bodyParser
app.use(methodOverride("_method"));

/* MONGOOSE/MODEL CONFIG*/
var blogSchema = new mongoose.Schema({
	title: String,
	image: String,
	body: String,
	created: {type: Date, default: Date.now}
});
var Blog = mongoose.model("Blog", blogSchema);


/*RESTFUL ROUTES*/

app.get('/', (req, res)=>{
	res.redirect('/blogs');
})

/*INDEX ROUTE*/
app.get('/blogs', (req, res)=>{
	Blog.find({}, (err, blogs)=>{
		if(err){
			console.log("ERROR!");
		}else{
			res.render("index", {blogs: blogs});
		}
	});
});

/*NEW ROUTE*/
app.get('/blogs/new', (req, res)=>{
	res.render("new");
});

/*CREATE ROUTE*/
app.post('/blogs', (req, res)=>{
	/*create blog*/
	req.body.blog.body = req.sanitize(req.body.blog.body);
	Blog.create(req.body.blog, (err)=>{
		if(err){
			res.redirect("new");
		}else{
			res.redirect("/blogs");
		}
	});
});

/*SHOW ROUTE*/
app.get("/blogs/:id", (req, res)=>{
	Blog.findById(req.params.id, (err, foundBlog)=>{
		if(err){
			res.redirect("/blogs");
		}else{
			res.render("show", {blog: foundBlog});		
		}
	});
});

/*EDIT ROUTE*/
app.get('/blogs/:id/edit', (req, res)=>{
	Blog.findById(req.params.id, (err, foundBlog)=>{
		if(err){
			res.redirect("/blogs");
		}else{
			res.render("edit", {blog: foundBlog});
		}
	});
});

/*UPDATE ROUTE*/
app.put('/blogs/:id', (req,res)=>{
	req.body.blog.body = req.sanitize(req.body.blog.body);
	Blog.findByIdAndUpdate(req.params.id, req.body.blog, (err, updatedBlog)=>{
		if(err){
			res.redirect("/blogs");
		}else{
			res.redirect("/blogs/"+ req.params.id);
		}
	});
});

/*DESTROY ROUTE*/
app.delete('/blogs/:id', (req, res)=>{
	/*DESTROY BLOG*/
	Blog.findByIdAndRemove(req.params.id, (err)=>{
		if(err){
			res.redirect("/blogs");
		}else{
			res.redirect("/blogs");
		}
	});
});

app.listen(3000, ()=>{
	console.log("Server is listening at 'localhost:3000'");
});