app.js

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

mongoose.connect("mongodb://localhost/restful_blog_app");
app.set("view engine","ejs");
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended : true}));
app.use(expressSanitizer());
app.use(methodOverride("_method"));

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

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

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

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

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});
        }
     });
});

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});
         }
    });
    
});

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

app.delete("/blogs/:id",function(req,res){
    Blog.findByIdAndRemove(req.params.id, function(err){
        if(err){
            res.redirect("/blogs");
        }else{
            res.redirect("/blogs");
        }
    });
});

app.listen(3000,function(){
   console.log("server is running");
});