How can I edit returned path from multer to remove a particualr word?

Question

I am using multer with express, when I upload the file multer's storage engine returns a path that also includes the public folder which is used by express static as I am using ejs template. Is there any way so that the returned path don't include the public folder name in it?

// Node App Configs

const app = express();
app.use(express.static("public"));
app.set("view engine", "ejs");
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use('/profile', express.static('uploads'));

// Storage Engine

const storage = multer.diskStorage({
    destination: './public/upload',
    filename: (req, file, cb) => {
        return cb(null, `${file.fieldname}_${Date.now()}${path.extname(file.originalname)}`)
    }
})

const upload = multer({
    storage: storage,
   limits:{
       fileSize: 10485760
   }
})
function errHandler(err, req, res, next) {
    if (err instanceof multer.MulterError) {
        res.json({
            success: 0,
            message: err.message
        })
    }
}
app.use(errHandler);

// Path that is being returned by multer

public\upload\profile_1609198415143.PNG

Is there any way so that this path that is returned don't include "public\ " in it?

Answer 1

From the doc File information, we know req.file.path is the full path to the uploaded file. It generated by path.join(destination, filename) statement, see disk.js#L37.

You can remove the public/ string like this:

console.log(req.file);
const path = req.file.path.split('/').slice(1).join('/');
console.log(path);

Output:

{ fieldname: 'file',
  originalname:
   'Stack Exchange personalized prediction data 2020-12-21.json',
  encoding: '7bit',
  mimetype: 'application/json',
  destination: './public/upload',
  filename: 'file_1609299871948.json',
  path: 'public/upload/file_1609299871948.json',
  size: 99765 }
upload/file_1609299871948.json