File Upload — Biryani Photo Upload with Multer

Let's put it all together — a complete biryani photo upload and menu management system.

// controllers/menu.controller.js — Complete Menu with Photo Upload
import Biryani from '../models/Biryani.js';
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

// POST /api/menu — Add a new biryani with photo
export const addBiryani = async (req, res) => {
  try {
    const { name, price, category, description } = req.body;
    const file = req.file;

    if (!file) {
      return res.status(400).json({
        success: false,
        message: 'Biryani photo required! Photo ke bina menu kaise banega? 📸'
      });
    }

    const biryani = await Biryani.create({
      name,
      price,
      category,
      description,
      photoUrl: '/uploads/' + file.filename,
      restaurant: req.user.id
    });

    res.status(201).json({
      success: true,
      message: name + ' menu mein add ho gaya! 🎉',
      data: biryani
    });
  } catch (error) {
    res.status(500).json({ success: false, message: error.message });
  }
};

// GET /api/menu — Get all biryanis with photos
export const getAllBiryanis = async (req, res) => {
  try {
    const biryanis = await Biryani.find().populate('restaurant', 'name');

    res.json({
      success: true,
      count: biryanis.length,
      data: biryanis.map(b => ({
        ...b.toObject(),
        photoUrl: b.photoUrl ? 'http://localhost:3000' + b.photoUrl : null
      }))
    });
  } catch (error) {
    res.status(500).json({ success: false, message: error.message });
  }
};

// DELETE /api/menu/:id — Delete biryani (and its photo)
export const deleteBiryani = async (req, res) => {
  try {
    const biryani = await Biryani.findById(req.params.id);

    if (!biryani) {
      return res.status(404).json({ success: false, message: 'Biryani not found!' });
    }

    // Delete the photo file from disk
    const filePath = path.join(__dirname, '..', biryani.photoUrl);
    if (fs.existsSync(filePath)) {
      fs.unlinkSync(filePath); // Delete physical file
    }

    await biryani.deleteOne();

    res.json({ success: true, message: 'Biryani deleted with photo! 🗑️' });
  } catch (error) {
    res.status(500).json({ success: false, message: error.message });
  }
};

// models/Biryani.js — Biryani Schema with Photo
import mongoose from 'mongoose';

const biryaniSchema = new mongoose.Schema({
  name: {
    type: String,
    required: [true, 'Biryani ka name daalo bhai!'],
    trim: true
  },
  price: {
    type: Number,
    required: [true, 'Price daalo — free mein thodi degi restaurant?'],
    min: [10, 'Itni sasti biryani nahi hoti bhai!']
  },
  category: {
    type: String,
    enum: ['Chicken', 'Mutton', 'Veg', 'Fish', 'Beef'],
    required: true
  },
  description: {
    type: String,
    default: 'Hyderabadi style biryani — full masaledar!'
  },
  photoUrl: {
    type: String,
    default: ''
  },
  restaurant: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: true
  },
  isAvailable: {
    type: Boolean,
    default: true
  }
}, { timestamps: true });

export default mongoose.model('Biryani', biryaniSchema);

Complete upload flow:

1. Restaurant opens a form with <input type="file" name="biryaniPhoto">
2. Form sends POST /api/menu with enctype="multipart/form-data"
3. Multer middleware intercepts, validates file type + size
4. If valid: Multer saves file to uploads/ folder with unique name
5. Route handler saves biryani details (name, price, photoUrl) to MongoDB
6. Server returns biryani data with photo URL
7. Client displays the photo: <img src="/uploads/biryani-1700000000.jpg">

Important: Serve static files!

// server.js — Serve uploaded files so clients can access them
import express from 'express';
import path from 'path';
import { fileURLToPath } from 'url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);

// Serve uploads folder as static files
app.use('/uploads', express.static(path.join(__dirname, 'uploads')));

// Now clients can access: http://localhost:3000/uploads/biryani-1700000000.jpg