Node/Multer Get Filename

Question

I am using the following to upload files to a directory via Multer. It works great, but I need to perform some actions after upload that require the name of the file I just posted to the "upload" directory. How do I get the name of the file I just posted?

// Multer storage options
var storage = multer.diskStorage({
  destination: function(req, file, cb) {
    cb(null, 'upload/');
  },
  filename: function(req, file, cb) {
    cb(null, file.originalname + '-' + Date.now() + '.pdf');
  }
});

var upload = multer({ storage: storage });

app.post('/multer', upload.single('file'), function(req, res) {
  // Need full filename created here
});

http://stackoverflow.com/questions/41209875/should-not-allow-file-upload-if-anyone-changes-extension-from-exe-to-png-via-mul — Jitendra Pancholi, Dec 18 '16 at 15:51

score 47 · Accepted Answer · edited Apr 10 '17 at 14:05

47

var express=require("express");
var app=express();
var multer=require("multer");
var upload=multer({dest:"uploads/"});
app.post("/multer", upload.single("file"), function(req,res){
    console.log(req.file.filename);
});

edited Apr 10 '17 at 14:05

Floern

33,559
24
104
119

answered Apr 10 '17 at 14:00

Yash Bele

676
7
7

5

Should be the accepted answer. User wants to get generated filename not the originalname. Thank you! – wobsoriano Jul 03 '18 at 00:40

score 36 · Answer 2 · answered Oct 17 '16 at 04:16

request.file gives the following stats, from which you would just need to pick request.file.originalname or request.file.filename to get the new filename created by nodejs app.

{ 
  fieldname: 'songUpload',
  originalname: '04. Stairway To Heaven - Led Zeppelin.mp3',
  encoding: '7bit',
  mimetype: 'audio/mp3',
  destination: './uploads',
  filename: 'songUpload-1476677312011',
  path: 'uploads/songUpload-1476677312011',
  size: 14058414 
}

Eg, in nodejs express mvc app with ecma-6,

var Express = require('express');
var app = Express();

var multipartUpload = Multer({storage: Multer.diskStorage({
    destination: function (req, file, callback) { callback(null, './uploads');},
    filename: function (req, file, callback) { callback(null, file.fieldname + '-' + Date.now());}})
}).single('songUpload');

app.post('/artists', multipartUpload, (req, resp) => {
     val originalFileName = req.file.originalname
     console.log(originalFileName)
}

http://stackoverflow.com/questions/41209875/should-not-allow-file-upload-if-anyone-changes-extension-from-exe-to-png-via-mul — Jitendra Pancholi, Dec 18 '16 at 15:51

score 13 · Answer 3 · answered Jan 19 '17 at 11:35

13

Accessing uploaded files data differs in Multer, depending whether you are uploading single or multiple files. Access data like so:

uploading single file:

req.file

uploading multiple files:

req.files

answered Jan 19 '17 at 11:35

Paul Walczewski

1,316
10
13

1

It's `req.files` for `multer.any()`. Perfect. – Fusseldieb Oct 31 '18 at 11:42

score 3 · Answer 4 · answered Nov 04 '20 at 15:20

3

I found the answer on github, you have access to it in res.req.file.filename See there for more informations https://github.com/expressjs/multer/issues/302

answered Nov 04 '20 at 15:20

Ajeddig Faris

49
3

score 2 · Answer 5 · edited Oct 10 '20 at 15:34

    app.post('/multer', upload.single('file'), function(req, res) {
  // Need full filename created here
const file = req.file
if (!file) {
    const error = new Error('Please upload a file')
    error.httpStatusCode = 400
    return next(error)
  }
 res.send(file) #Here
});

You need recover file from this line

 res.send(file)

using file.filename This output sample

{
  "fieldname": "myFile",
  "originalname": "isc te esta esperando.jpg",
  "encoding": "7bit",
  "mimetype": "image/jpeg",
  "destination": "uploads",
  "filename": "myFile-1602293858948.eaf",
  "path": "uploads/myFile-1602293858948.eaf",
  "size": 297720
}

score 1 · Answer 6 · answered Dec 14 '16 at 17:02

1

using request.file.filename

fieldname Field name specified in the form
originalname Name of the file on the user's computer encoding Encoding type of the file
mimetype Mime type of the file
size Size of the file in bytes

answered Dec 14 '16 at 17:02

Ahmed Alassafy

13
7

Node/Multer Get Filename

6 Answers6

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