app.js

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


// APP CONFIG
mongoose.connect(process.env.MONGOLAB_URI, { useNewUrlParser: true });
// mongoose.connect("mongodb://localhost:27017/restful_blog_app", { useNewUrlParser: true });
app.set("view engine", "ejs");
app.use(express.static("public"));
app.use(bodyParser.urlencoded({extended: true}));
app.use(expressSanitizer());
app.use(methodOverride("_method"));


// MONGOOSE/ MODEL CONFIG
let blogSchema = new mongoose.Schema({
  title: String,
  image: String,
  body: String,
  created: {type: Date, default: Date.now}
});
let 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) {
  req.body.blog.body = req.sanitize(req.body.blog.body); // sanitize
  Blog.create(req.body.blog, function(err, newBlog) {
    if (err) res.render("new");
    else 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) {
  req.body.blog.body = req.sanitize(req.body.blog.body); // sanitize
  Blog.findByIdAndUpdate(req.params.id, req.body.blog, function(err, updatedBlog) {
    if (err) res.redirect("/blogs");
    else res.redirect("/blogs/" + req.params.id);
  });
})

// DESTROY ROUTE
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(process.env.PORT, process.env.IP, function() {
  console.log("RESTfulBlogApp Server has started");
});