app.js

//INCLUDING ALL THE FRAMEWORKS AND DATABASES
var express           = require("express");
var expressSanitizer  = require("express-sanitizer")
var bodyParser        = require("body-parser");
var mongoose   	      = require("mongoose");
var methodOverride    = require("method-override");
var app               = express();

//APP CONFIG
// mongoose.connect("mongodb://localhost/restful_blog_app");
mongoose.connect("mongodb://ashu:ashu0810@ds241664.mlab.com:41664/blogapp");
app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended: true}));
app.use(expressSanitizer());
app.use(methodOverride("_method"));

//SCHEMA FOR THE DATABASE
var blogSchema = new mongoose.Schema({
	title  : String,
	image  : String,
	body   : String,
	created: {
		type: Date, 
		default: Date.now
	}
});

//OBJECT MODEL FOR THE DATABASE
var Blog = mongoose.model("Blog", blogSchema);

//RESTFUL ROUTES

app.get("/",function(req,res){
	res.redirect("/blogs")
})

//INDEX ROUTE
app.get("/blogs", function(req,res){
	Blog.find({},function(err,blogs){
		if(err){
			console.log(err);
		}
		else{
			res.render("index", {blogs: blogs});
		}
	});
});

//NEW ROUTE
app.get("/blogs/new", function(req,res){
	res.render("new");
});

//CREATE ROUTE
app.post("/blogs", function(req,res){
	//create blog
	//sanitizer
	req.body.blog.body = req.sanitize(req.body.blog.body);
	Blog.create(req.body.blog, function(err, newBlog){
		if(err){
			res.render("new");
		}
		else{
			//redirect to index
			res.redirect("/blogs");
		}
	});
});

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

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

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

//DELETE ROUTE
app.delete("/blogs/:id", function(req,res){
	//Destroy blog
	Blog.findByIdAndRemove(req.params.id, function(err){
		if(err){	//good practice to keep the if statement.
			res.redirect("/blogs");
		}
		else{
			//redirect somewhere
			res.redirect("/blogs");
		}
	})
});

//START THE SERVER
app.listen(process.env.PORT || 8080, process.env.IP, function(){
	console.log("The blog server has started!!")
})