app.js

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



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("/", 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.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.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/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, updatedBlog){
    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");
    }
  })
});



Blog.create({
  title: "Test Blog",
  image: "https://images.unsplash.com/photo-1507525428034-b723cf961d3e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1953&q=80",
  body: "This is a blog post",
});

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