How to save pdf file in node js with express and multer - node.js

Question

I'm using a multer api, and I'm saving files in memory, because I need to upload images and pdf, and I need to process the images.
I can upload images, but I can't upload pdfs files.
Thanks

Answer 1

well, this is my code... I really hope to help you.
const express = require('express');
const multer = require('multer');
const app = express();
const storage =
multer.diskStorage({
destination: path.join(__dirname, 'public/img/'), // destination folder
filename: (req, file, cb) => {
cb(null, uuid.v4() + path.extname(file.originalname));
}
});
const upload =
multer({
storage,
dest: path.join(__dirname, 'public/img/'), // destination folder
limits: {fileSize: 3500000}, // size we will acept, not bigger
fileFilter: (req, file, cb) => {
const filetypes = /jpeg|jpg|png|gif|pdf/; // filetypes you will accept
const mimetype = filetypes.test(file.mimetype); // verify file is == filetypes you will accept
const extname = filetypes.test(path.extname(file.originalname)); // extract the file extension
// if mimetype && extname are true, then no error
if(mimetype && extname){
return cb(null, true);
}
// if mimetype or extname false, give an error of compatibilty
return cb("The uploaded file, isn't compatible :( we're sorry");
}
}).single('image'); // This is the field where is the input type="file", we only accept 1 image
app.use(upload);
and the view will looks like this
app.post('/add', async (req, res) => {
const { originalname, mimetype, destination, filename, path, size} = req.file;
const newImage = {
originalname,
mimetype,
destination,
filename,
path,
size
};
await pool.query('Insert Into imagen set ?', [newImage]);
res.send('image uploaded');
});

Answer 2

this might help you
// Set storage engine
const storage = multer.diskStorage({
destination: "./uploads",
filename: function(req, file, cb) {
// null as first argument means no error
cb(null, Date.now() + "-" + file.originalname);
},
});
let encode_file = null;
let fileName = "";
if (req.file) {
fileName = req.file.originalname;
var filepath = path.join(__dirname, req.file.path);
console.log(filepath);
var stream = fs.readFileSync(filepath);
encode_file = stream.toString("base64");
}