How to upload multiple files with multer-s3 in Nodejs - node.js

Question

I am trying to upload multiple images with Nodejs, Expressjs and Multer-s3, but it's not working.
I have a model called Program and the Program model has an array image attribute but when I try to upload multiple images my req.file returns undefined.
Here is my model
const programSchema = new mongoose.Schema({
programtype: {
type: String,
required: true,
},
title: {
type: String,
required: true,
},
description: {
type: String,
required: true,
},
createdAt: {
type: Date,
required: true,
default: Date.now,
},
programImage: {
type: Array,
require: true,
},
});
and my routes
const Program = require("../models/program");
const fs = require("fs");
const multer = require("multer");
const path = require("path");
var AWS = require("aws-sdk");
var multerS3 = require("multer-s3");
AWS.config.update({
secretAccessKey: process.env.S3_SECRECT,
accessKeyId: process.env.AWS_ACCESS_KEY,
region: process.env.S3_REGION,
});
const uploadPath = path.join("public", Program.programImageBasePath);
const imageMineTypes = ["image/jpeg", "image/png", "image/gif"];
const bucketname = "mybucketname";
s3 = new AWS.S3();
const upload = multer({
storage: multerS3({
s3: s3,
acl: "public-read",
bucket: bucketname,
s3BucketEndpoint: true,
endpoint: "http://" + bucketname + ".s3.amazonaws.com",
key: function (req, file, cb) {
const uploadPathWithOriginalName = uploadPath + "/" + file.originalname;
cb(null, uploadPathWithOriginalName);
},
}),
});
router.post("/create", upload.array("cover", 10), async (req, res, next) => {
console.log(req.file);
const program = new Program({
programtype: req.body.programtype,
title: req.body.title,
description: req.body.description,
programImage: req.file.location,
});
try {
const programs = await program.save();
res.redirect("/programs");
} catch {
if (program.programImage != null) {
removeprogramImage(program.programImage);
}
res.render("programs/new");
}
});
and my views
<h2 style="padding-top: 90px;" > New Programs</h2>
<form action="/programs/create" method="POST" enctype="multipart/form-data">
<div>
<label>Image</label>
<input type="file" name="cover" multiple />
</div>
Cacel
<button type="submit">Create</button>
</form>

Answer 1

You can refer to this example.
const s3 = new AWS.S3({
accessKeyId: 'xxxxxxxxx',
secretAccessKey: 'xxxxxxxxx'
});
const uploadS3 = multer({
storage: multerS3({
s3: s3,
acl: 'public-read',
bucket: 'xxxxxxxx',
metadata: (req, file, callBack) => {
callBack(null, { fieldName: file.fieldname })
},
key: (req, file, callBack) => {
var fullPath = 'products/' + file.originalname;//If you want to save into a folder concat de name of the folder to the path
callBack(null, fullPath)
}
}),
limits: { fileSize: 2000000 }, // In bytes: 2000000 bytes = 2 MB
fileFilter: function (req, file, cb) {
checkFileType(file, cb);
}
}).array('photos', 10);
exports.uploadProductsImages = async (req, res) => {
uploadS3(req, res, (error) => {
console.log('files', req.files);
if (error) {
console.log('errors', error);
res.status(500).json({
status: 'fail',
error: error
});
} else {
// If File not found
if (req.files === undefined) {
console.log('uploadProductsImages Error: No File Selected!');
res.status(500).json({
status: 'fail',
message: 'Error: No File Selected'
});
} else {
// If Success
let fileArray = req.files,
fileLocation;
const images = [];
for (let i = 0; i < fileArray.length; i++) {
fileLocation = fileArray[i].location;
console.log('filenm', fileLocation);
images.push(fileLocation)
}
// Save the file name into database
return res.status(200).json({
status: 'ok',
filesArray: fileArray,
locationArray: images
});
}
}
})
};