Adding link to Mongo DB when uploading image to AWS S3 Bucket - node.js

Question

In my Express backend, I have set up a connection with S3 Bucket for uploading images, and it works.
However additionally, I would like to be able to store a reference link (S3 url) of the saved image in my Mongo Database.
I have been trying to play around with req.file object but somehow, I cannot get the req.file.location, whereas req.file.buffer works okay (as in the example below in itemController.js). Is there any problem in my s3.js configuration? Or pehraps I would need a different approach to get req.file.location instead of buffer?
Below my bucket configuration s3.js
// s3.js
const AWS = require('aws-sdk')
// s3 bucket configuration
const awsConfig = {
accessKeyid : process.env.S3_ACCESS_KEY,
secretAccessKey : process.env.S3_ACCESS_SECRET,
region : process.env.S3_REGION
}
const S3 = new AWS.S3(awsConfig)
//s3 bucket upload function
const uploadToS3 = (fileData) => {
return new Promise ((resolve, reject) =>{
const params = {
Bucket : process.env.S3_BUCKET_NAME,
Key: `${Date.now().toString()}.jpg`,
Body: fileData
}
S3.upload(params, (err, data) =>{
if(err){
console.log(err)
reject(err)
}
console.log(data)
return resolve(data)
})
})
}
module.exports = {
uploadToS3
}
Here is my itemController.js
const Item = require('../models/itemModel')
const Worker = require('../models/workerModel')
const mongoose = require('mongoose')
const multer = require('multer')
const { uploadToS3 } = require('../s3')
//! Multer configuration
const multerConfig = {
limits: 1024 * 1024 * 5,
fileFilter: function (req, file, done) {
if (file.mimetype === "image/jpg"|| file.mimetype === "image/png" || file.mimetype ==='image/jpeg') {
done(null, true)
} else {
done("Niewłaściwy plik, użyj .jpg .jpeg .png", false)
}
}
}
const upload = multer(multerConfig)
//! CREATE new item
const createItem = async (req, res) => {
// multer middleware that handles file upload
upload.single("image")(req, res, async () => {
//destructuring form req.body
const {
title,
model,
producer,
serialNumber,
yearOfProduction,
atEmployee,
seller,
warrantyDate,
purchaseDate,
image,
} = req.body
if (!title){
return res.status(400).json({error:'Błąd! Wymagane jest podanie chociaż nazwy narzędzia.'})
}
//try-catch to create new Item and catch error. Add "await" because of "async" - Js promise above
try {
const item = await Item.create({
title,
model,
producer,
serialNumber,
yearOfProduction,
atEmployee,
seller,
warrantyDate,
purchaseDate,
image: req.file ? req.file.buffer : image,
})
if (req.file) {
// upload file to S3 and store the URL in the database
const result = await uploadToS3(req.file.buffer)
item.imageUrl = result.location
await item.save()
}
res.status(200).json(item)
} catch(error) {
res.status(400).json({error: error.message})
}
})
}
...
And here is my ItemModel.js
const mongoose = require('mongoose')
//mongoose function to create new model Schema
const Schema = mongoose.Schema
const itemSchema = new Schema ({
title: {
type: String,
required: true,
},
producer: {
type: String,
required: false,
},
model: {
type: String,
required: false,
},
serialNumber: {
type: String,
required: false,
},
yearOfProduction:{
type: Number,
required: false
},
seller:{
type: String,
required: false
},
purchaseDate: {
type: Date,
default: Date.now
},
warrantyDate: {
type: Date,
required: false,
},
//Linking Worker model to an Item
atEmployee: {
type: mongoose.Schema.Types.ObjectId,
required: false,
ref:'Worker',
},
image: {
type: String,
required: false,
}
}, { timestamps: true })
module.exports = mongoose.model('Item', itemSchema)

Answer 1

This is how I actually solved it
itemController.js
const Item = require('../models/itemModel')
const Worker = require('../models/workerModel')
const mongoose = require('mongoose')
const multer = require('multer')
const { uploadToS3 } = require('../s3')
//! Multer configuration
const multerConfig = {
limits: 1024 * 1024 * 5,
fileFilter: function (req, file, done) {
if (file.mimetype === "image/jpg"|| file.mimetype === "image/png" || file.mimetype ==='image/jpeg') {
done(null, true)
} else {
done("Niewłaściwy plik, użyj .jpg .jpeg .png", false)
}
}
}
const upload = multer(multerConfig)
//! CREATE new item
const createItem = async (req, res) => {
// multer middleware that handles file upload
upload.single("image")(req, res, async () => {
//destructuring form req.body
const {
title,
model,
producer,
serialNumber,
yearOfProduction,
atEmployee,
seller,
warrantyDate,
purchaseDate,
image,
} = req.body
if (!title){
return res.status(400).json({error:'Błąd! Wymagane jest podanie chociaż nazwy narzędzia.'})
}
//try-catch to create new Item and catch error. Add "await" because of "async" - Js promise above
try {
let item = {}
if (req.file) {
// upload file to S3 and store the URL in the database if image has been uploaded
const result = await uploadToS3(req.file.buffer)
item = await Item.create({
title,
model,
producer,
serialNumber,
yearOfProduction,
atEmployee,
seller,
warrantyDate,
purchaseDate,
image: result.Location,
})
//if no image, show nothing
} else {
item = await Item.create({
title,
model,
producer,
serialNumber,
yearOfProduction,
atEmployee,
seller,
warrantyDate,
purchaseDate,
})
}
res.status(200).json(item)
} catch(error) {
res.status(400).json({error: error.message})
}
})
}