RESTRUCTURING LISTINGS

A ROUTER FOLDER IS CREATED AND A LISTING.JS FILE IS CREATED IN IT. 

LISTING.JS

const express = require("express");

const router = express.Router();

const wrapAsync = require("../utils/wrapAsync.js");

const ExpressError = require("../utils/ExpressError.js");

const { listingSchema, reviewSchema } = require("../schema.js");

const Listing = require("../models/listing.js");

const ValidateListing = (req, res, next) => {

  let { error } = listingSchema.validate(req.body);

  if (error) {

    let errMsg = error.details.map((el) => el.message).join(",");

    throw new ExpressError(400, errMsg);

  } else {

    next();

  }

};

// INDEX ROUTE

router.get(

  "/",

  wrapAsync(async (req, res) => {

    let AllListings = await Listing.find({});

    res.render("listings/index.ejs", { AllListings });

  })

);

// NEW ROUTE

router.get("/new", (req, res) => {

  res.render("listings/new.ejs");

});

router.post(

  "/",

  ValidateListing,

  wrapAsync(async (req, res, next) => {

    const newListing = new Listing(req.body.listing);

    await newListing.save();

    res.redirect("/listings");

  })

);

// SHOW ROUTE

router.get(

  "/:id",

  wrapAsync(async (req, res) => {

    let { id } = req.params;

    const listing = await Listing.findById(id).populate("reviews");

    res.render("listings/show.ejs", { listing });

  })

);

// EDIT ROUTE

router.get(

  "/:id/edit",

  wrapAsync(async (req, res) => {

    let { id } = req.params;

    const listing = await Listing.findById(id);

    res.render("listings/edit.ejs", { listing });

  })

);

// UPDATE ROUTE

router.put(

  "/:id",

  ValidateListing,

  wrapAsync(async (req, res) => {

    if (!req.body.listing) {

      throw new ExpressError(400, "send valid data!");

    }

    let { id } = req.params;

    await Listing.findByIdAndUpdate(id, { ...req.body.listing });

    res.redirect(`/listings/${id}`);

  })

);

// DELETE ROUTE

router.delete(

  "/:id",

  wrapAsync(async (req, res) => {

    let { id } = req.params;

    let deletedList = await Listing.findByIdAndDelete(id);

    console.log(deletedList);

    res.redirect("/listings");

  })

);

module.exports=router;

ALL THE ROUTES WITH /listings ARE COPIED AND ALL THE REQUIRED CONSTANTS AND FUNCTIONS ARE ALSO COPIED(WrapAsync and ValidateListing)

router IS EXPORTED.

IN APP.JS router IS REQUIRED.

const listings = require("./routes/listings.js");

app.use("/listings", listings);

BY THESE TWO LINES /listings CAN BE USED.